Faculty of Nuclear Sciences and Physical Engineering

Research Activity Report 2001

  1. Preface
  2. Departments

  3.  - Department of Mathematics
     - Department of Physics
     - Department of Languages
     - Department of Solid State Engineering
     - Department of Physical Electronics
     - Department of Materials
     - Department of Dosimetry and Application of Ionizing Radiation
     - Department of Nuclear Chemistry
     - Department of Nuclear Reactor
  4. Research Plan

  5.  - Nuclear Installations, Nuclear Safety and Radiation Protection
     - Mathematical Methods and Fundamental Experiments in the Physics of Microworld
     - Characterization of Materials
     - Laser Systems and their Application
  6. Department of Mathematics

  7.  - Mathematical Physics I
     - Mathematical Physics II
     - Mathematical Modelling Group
     - Algebraic and Combinatorial Methods
     - Stochastic Modelling Group
  8. Department of Physics

  9.  - Mathematical Physics III
     - Experimental Nuclear Physics
     - Applied Nuclear Physics
  10. Department of Solid State Engineering

  11.  - Laboratory of Semiconductors
     - Laboratory of Optical Spectroscopy of Solids
     - Structure and Texture Analysis by Neutron Diffraction
     - X-ray Investigation of Residual Strains in Polycrystalline Materials
  12. Department of Physical Electronics

  13.  - Ion Beam Modification and Analysis of Materials
     - X-ray Optics and Diagnostics
     - Diffractive and Nonlinear Optics
     - Laser Technology
     - Molecular Electronics and Spectroscopy
     - Satellite Laser Ranging
     - Information Physics
     - Picosecond Timing and Detector Technology
     - Short Pulse Solid State Lasers
     - Solid State Lasers and their Medical Applications
     - Capillary Discharge for X-ray Laser Pumping
  14. Department of Materials

  15.  - Fracture Mechanics and Damage Mechanics
     - Mathematical Modelling of Mechanical Failure
  16. Department of Nuclear Chemistry

  17.  - Development of Advanced Technologies for Treatment of Liquid Waste Contaminated by Radionuclides or Heavy and/or Toxic Metals
     - Modelling of Environmental Migration of Pollutants
     - Radiation Chemistry
     - Radiotracer Method in Environmental Studies
     - Radioanalytical Methods for Monitoring of the Environment and for Safeguarding Nuclear Materials
  18. Department of Dosimetry and Application of Ionizing Radiation

  19.  - Applications of Radiation and Radionuclides in Medicines
     - Biomonitoring Air Pollution by Radioanalytical Methods
     - Gamma Ray Dosimetry, in-situ Spectrometry in Environmental Monitoring and Radon Monitoring
     - Microtron Laboratory
     - X-Ray Fluorescence Analysis
     - Laboratory of Quantitative Methods in Research of Ancient Monuments
  20. Department of Nuclear Reactor
     - Training and Experimental Reactor VR-1
     - Computer Control of Nuclear Facilities
     - Accelerator Driven Systems
     - Impact of Nuclear Energy Utilization on the Environment
     -Training Laboratory for Simulation of the NPPs Operation
     -Nuclear Safety Improvement during NPPs Operation of VVER type

Preface
Faculty Profile

The Faculty of Nuclear Sciences and Physical Engineering (FNSPE) of the Czech Technical University in Prague represents a relatively young and dynamic teaching and research centre orientated towards the border areas between modern science and its application to technology. The teaching programme is based on a thorough knowledge of mathematical methods as well as experimental and theoretical physics and chemistry. Progressively, it is directed towards the engineering applications of these sciences, the individual participation of students in various research projects being the main educational principle of the Faculty. Such a system enables the graduates to adapt easily to broadly orientated research teamwork, switch to the needed areas of scientific and industrial RD projects and be prepared for developments in future technology. Thematically, teaching and research at the Faculty covers applied nuclear sciences (reactor physics and technique; dosimetry; radiation applications, protection and safety; nuclear chemistry), physics in modern technology (quantum electronics and laser techniques, solid state and material research) and the rapidly developing branches of mathematical and software engineering.

Brief History

The Faculty was established in 1955, as part of the Charles University, Prague (founded in 1348), but in 1959 became a new special faculty of the Czech Technical University (founded in 1707). Its establishment was at the beginning of a new era of the peaceful use of nuclear energy. A complex approach to all nuclear branches was intended, so specialists from both universities, technological institutions and industry were brought together to comply with this task. Later, newly developed areas of physics application, e.g. plasma and solid state physics, lasers, cosmic research etc. were included in the Faculty curricula. The characteristics of the Faculty activities developed during its history, and the most advanced areas of technological progress have always attracted its attention. Gifted students with a special interest in mathematics were taught individually and subsequently the study of mathematical engineering was established.

Organisation

FNSPE consists of nine departments (Mathematics, Physics, Languages, Solid State Engineering, Physical Electronics, Materials, Nuclear  Chemistry, Dosimetry and Application of Ionizing Radiation, Nuclear  Reactors), Centre of Software Engineering in Economy, several laboratories (Microtron, Training Nuclear Reactor,  Computational), the Central Faculty Library with an Audio-Visual  Section, Central Workshop and other services. The Academic staff, both  teachers and scientists, number about 90 and the supporting staff 92. As a  rule, the scientific and research staff are engaged in teaching,  especially supervising the students' research projects and giving  special courses.

Education
Bachelor’s Degree  programmes (3.5 years):

Software Engineering in Economy.
Instruments and Informatics
Laser Technology and Optoelectronics
Radiation Protection and the Environment
Nuclear Facilities

Master’s  Degree  programmes ( 5.5 years ):
(also referred to as Engineering Degree programmes)

Mathematical Modelling (mathematical applications  in   physics,   natural    sciences and engineering; development and computer realization of  mathematical models)

Mathematical Physics (theoretical physics; modern  algebra, differential geometry and algebraic topology;  modelling and computational simulation of physical processes)

Information Systems in Physical Engineering (physics of advanced technologies; informatics in science and  research; computers and advanced software products)
  
Software Engineering (information systems in advanced technologies;  informatization of research and projects in science,  medicine, finance, etc.)

Information Technology (applied mathematics, signal processing, data transmission, computer graphics, computer networks, electronics, control systems)

Software Development (Algebra, Discrete Mathematics, Parallel Computing, Architecture of Computers, Operating Systems, Computing Graphics, Artificial Intelligence, Neural Computing)

Solid State Engineering (solid state physics,  semiconductor and magnetic devices, materials on the solid  state basis, X-ray and neutron structure analysis)

Materials Science and Applied Mechanics (physics of solids, physical metallurgy, engineering and computer  mechanics, mechanical behaviour of materials, testing of  materials, damage processes and fracture, reliability)

Physical Electronics (classical and quantum electronics, electrodynamics, laser physics, plasma physics, optics, solid state electronics and selected applications  including lasers, modern optics, optoelectronics, ion beams,  control and measurements, computers and informatics)

Nuclear Reactor Theory and Engineering (nuclear and neutron physics, reactor physics and dynamics, experimental  reactor physics, hydro- and thermo-mechanics, design and  control of nuclear facilities, nuclear safety and  reliability, Accelerator Driven Transmutation Technologies)

Nuclear Energy and the Environment (effect of  nuclear facilities on the environment; design, construction and operation of nuclear facilities with respect to the environment) 

Dosimetry and Application of Ionizing Radiation (physics of ionizing radiation; radiation dosimetry; radiation  detectors; biological effects of radiation; radiation  protection; applications of radiation in science, medicine and technology)

Radiation Physics in Medicine (physics of ionizing radiation, detectors and dosimetry, biological effects of radiation, nuclear medicine, radiotherapy, radiodiagnostic methods, radiation protection of staff and patients)

Experimental Nuclear Physics (theoretical and quantum  physics, atomic and subatomic physics, atomic nucleus,  neutron physics, atomic and nuclear spectroscopy)

Applied Nuclear Chemistry (preparation, analysis and  application of radioisotopes and nuclear materials;  radiochemical methods; nuclear fuel cycle chemistry) 
 
Chemistry of the Environment (analysis of components  of the environment, analysis and modelling of transport of contaminants, radioactive waste management)

Doctoral degree  programmes:

Programmes generally taking 3 years follow a system of disciplines similar to those of the Master’s Degree courses in Mathematical Engineering, Physical Engineering, Nuclear Engineering, Nuclear Chemistry, Analytical Chemistry and Physical Chemistry.

Research

The Faculty is a dynamic scientific and research  centre working in the border areas between modern  science and its applications in engineering. Its laboratories  are equipped with several large research facilities, such as  the microtron type electron accelerator used for  neutron activation analysis and nuclear physics research, the VR-1 training nuclear reactor, the scanning electron  microscope, high power laser systems, etc.

In 2000, about 90 research projects were in progress.  Scientists from the Faculty are invited to present papers  at conferences worldwide and they are also involved in or  directly supported by grants from the U.S.A, Germany, United Kingdom, France, the European Community, and Russia. More  than 20 universities and international scientific  institutions cooperate with or support research at the  Faculty.  The best doctoral students have been awarded scholarships  at universities abroad.
The Faculty research staff are also engaged in teaching  and especially in supervising  student research projects,  which form a part of the departments’ research. Due to the  training received, the graduates possess good skills in various  experimental techniques and computer modelling, and their  theoretical and methodical background is broad enough for  versatile careers in research, engineering, informatics,  management, etc.

Students

Enrolment in the Faculty exceeds 1000 students, who are provided with  inexpensive accommodation and meals in the CTU halls of residence and  city transport at reduced rates. Health care is free. Students elect  their self-governing bodies and organise a wide variety of social,  cultural and sporting activities. Their representatives on the Faculty  Senate and other commissions significantly contribute to decisions  involving all aspects of Faculty life.

Management of the Faculty

DEAN
Prof. Ing. Miloslav Havlíček, DrSc.
Phone   +420 2 2232 3033
Fax    +420 2 2435 8335
e-mail:
dekan@br.fjfi.cvut.cz

VICEDEANS

  • Education

  • Doc. Ing. Goce Chadzitaskos, CSc.
    Phone    +420 2 2435 8263
    Fax   +420 2 2232 0861
    e-mail: chadzita@br.fjfi.cvut.cz

  • Science, Research and International Relations

  • Doc. Ing. Miroslav Čech, CSc.
    Phone    +420 2 2435 8287
    Fax    +420 2 2435 8337
    e-mail: mcech@troja.fjfi.cvut.cz

  • Organization, Development and Campus Děčín

  • Doc. Ing. Milan Kálal, CSc.
    Phone    +420 2 2191 2274
    Fax    +420 2 688 4818
    e-mail: kalal@troja.fjfi.cvut.cz

REGISTRAR
Ing. Leopold Vrána
Phone   +420 2 2231 0482
Fax   +420 2 2435 8336
e-mail: tajemnik@br.fjfi.cvut.cz

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Departments
Department of Mathematics

Location:
Trojanova 13, 120 00 Praha 2; Tel: +420 2 2435 8540, 
FAX: +420 2 2491 8643, e-mail:
km@km1.fjfi.cvut.cz

Staff:
 Head: Doc. RNDr. Jan Mareš, CSc.
Teaching and research : 16 (2 professor, 5 readers, 10 senior lecturers), approx. 20-23 external members of staff
 Other:  6

Bachelor’s and Master’s Degree programmes (main courses):
The Department provides three types of programme:

  • Mathematics as a basis for all Engineering Degree courses. The main subjects are: Calculus, Linear algebra, Functions of the complex variable, Ordinary differential equations, Numerical analysis, Partial differential equations, Theory of probability and mathematical statistics, as well as an introductory course in computer science and programming languages, including application to numerical computations.
  • Mathematics for students taking a degree course in Mathematical Engineering. The students are trained in applied mathematics, both classical and modern.  They can also choose courses in software engineering.  (Courses offered include Functional analysis, Algebra, Computer science, Stochastic processes, Combinatorics and graph theory, Analysis of algorithms, etc.)
  • Computer science for students taking a degree in Engineering Informatics.  The students are trained in applied mathematics, programming languages and  communication and information systems. (Courses offered include Discrete mathematics, Numerical mathematics and statistics, Theory of algorithms, Operating systems, Architecture of computers, Computer netwares and data bases etc.)    The Department is also engaged in teaching mathematics and in projects at the doctoral degree level.

Research Activities:
The research programme is directed towards the following problems:
* using algebraic structures in mathematical physics
* algebraical and combinatorical methods and their application in computer science
* mathematical methods in fluid dynamics
* programming languages and user-friendly window applications
* using categories in neural nets
* minimum divergence methods in mathematical statistics, asymptotic properties of statistical point estimators and tests

Centre Tereza:
     At the department of mathematics the centre TEREZA for supporting visually impaired university students has been established.The classroom of the centre is equipped  - besides the common personal computers - by some special devices such as several Braille displays, large monitors, speech outputs, a closed circuit television, scanners, a Braille printer, a tactile image enhancer, i.e. a device, enabling  perception of pictures and other graphic information. Visually handicapped students can connect himself/herself to the Internet.
    Particular attention is paid to digitalizing the study-texts for the visually impaired.Although the Braille script used for standard texts has been in use for almost a hundred years, the way of notation for more special mathematical symbols has never been unified and standardized. The first complex task to be solved in order to provide the students with mathematical study texts in the Braille is to create a standardized Braille script for mathematical writings.The second  task to be faced is to translate the lecture notes and books into this standardized script.
     The cooperation of the centre has been established with the Universities Karlsruhe, Linz, Loughborough.

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Department of Physics

Location:
 Břehová 7, 115 19 Praha 1, Tel:  +420 2 2231 7661
Fax: +420 2 2232 0861, e-mail:
kf@br.fjfi.cvut.cz

Staff:
 Head: Prof. Ing. Jiří Tolar, DrSc.
Academic staff: 15 (3 professors, 5 associate professors, 6 assistant professors, l  research assistant)
 Other:  7 (temporary staff), external lecturers

Bachelor’s and Master’s Degree programmes (main courses):
* First year --- Mechanics, Heat, Electricity and magnetism, Experimental physics I
* Second year --- Waves, optics and atomic physics, Thermodynamics and statistical Physics, Experimental physics II (including Laboratories), Theoretical physics (classical)
* Third year --- Quantum mechanics, Nuclear physics
* Third, Fourth and Fifth year --- Special courses in the curricula of Mathematical physics and Experimental nuclear physics

   The first and second year courses in physics belong to the foundations on which most studies and research in the Faculty are built. They comprise a complete course of general physics and additional courses in experimental and theoretical physics. Introductory  courses in physics are offered to students of nuclear chemistry. The Department's teachers are also engaged in Master´s Degree and Doctoral programmes in the fields of theoretical and mathematical physics and experimental nuclear and particle physics. A course in the History of Physics is also given.

Research Activities:
     Research work in mathematical physics is carried out in close cooperation with the Department of Mathematics and several universities and institutes abroad. Information on current research activities can be found on the web pages of the Department of Physics (http://ww.fjfi.cvut.cz/k402/) and of the Doppler Institute for Mathematical Physics (http://gemma.ujf.cas.cz/~exner/) which, since 1993, serves as a research and education centre of FNSPE in collaboration with the Czech Academy of Sciences (see the pages devoted to the Doppler Institute). Most of the research is related to quantum mathematical physics, but the research in computer simulation of particle motion in plasma physics is also included.

     Research activities in the Nuclear Physics Group of the Physics Department are oriented mainly on experiments in nuclear and particle physics. They are carried out in cooperation with CERN (Experiment ATLAS on LHC), LNS Saclay (experiments on polarization of nucleons in N-N elastic scattering), LAL Orsay and JINR Dubna (investigation of double beta decay), JINR Dubna and ILL Grenoble (experimental study of rare elements nuclei by radiative neutron capture) as well as with other universities and institutes abroad. Available equipment and instrumentation are also used for the development of semiconductor detectors and analytical applications of alpha and gamma spectroscopy (http://kf-alpha.fjfi.cvut.cz).

     The research in both areas is coordinated at CTU under the Research Plan "Mathematical Methods and Fundamental Experiments in the Microworld", MSM 210000018.

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Department of Languages
Location:
Trojanova 13, 120 00 Praha 2; Tel.,fax:+420 2 2491 5115,
Tel: +420 2 2435 8570-3, e-mail:
kj@km1.fjfi.cvut.cz

Staff:
Head:  Vlasta Bezusova,prom.fil.
Teaching: 6 senior lecturers, 1 foreign lecturer (English)

The Department of Languages, the smallest in the Faculty, provides training in two foreign languages, i.e. English and another elective language: there is an option of French, German, Russian , and Spanish. The language training is offered to undergraduate students in the first, second and third year of their degree courses. Furthermore, specialized courses for Academic Purposes are offered to  PhD  students in the above languages.

The instruction ranges from beginners' to intermediate and advanced credit courses, special emphasis being laid on including courses for specific and academic purposes. No English coursers for beginners are provided.

In addition to teaching, the staff are currently engaged in designing and preparing up-to-date teaching materials for the courses and in holding proficiency examinations required by various institutions, e.g. International Atomic Agency. The Department also provides services to other Departments of the Faculty in editing their translations and reports and providing language counselling. It also cooperates with the British Council, the French Cultural Institute, the Austrian Cultural Centre and the Spanish  Language Attaché. Beginning the academic year 2001/2002, a new type of Bachelor Degree Course will be introduced, combining informatics and English.

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Department of Solid State Engineering

Location:
V Holešovičkách 2, 180 00 Prague 8. Tel: +420 2 2191 2381,
Fax:420 2 2191 2407,e-mail:
kipl@troja.fjfi.cvut.cz
Semiconductors laboratory: Trojanova 13, 120 00 Praha 2,
Tel: +420 2 2435 8576, Fax: +420 2 2435 8577
e-mail: tomiak@km1.fjfi.cvut.cz
Neutron diffraction laboratory: in the Institute of Nuclear Research, Řež near Prague, Tel: +420 2 6617 2345
e-mail: vratisla@troja.fjfi.cvut.cz

Staff:
Head: Prof. Ing. Stanislav Vratislav, Csc.
Teaching: 8 (2 professors, 2 readers, 4 senior lecturers),
about 5 external members of staff also engaged in teaching
Research: 4 (some also participate in teaching)
Other:  5

Master’s Degree programme (main courses):
* Third year --- Structure of solid state, Theory of solid state, Theoretical and experimental electronics, Quantum mechanics 
* Fourth year --- Physics of semiconductors, Physics of magnetic materials, Low temperature physics, Superconductivity, Physics of dielectrics, Physics of metals, Practical excercises in structure of solid state
* Fifth year --- Physics of surfaces, Optical properties of solid state, Modern measuring methods in physics, Liquid crystals, Measurement methods in solid state, Semiconductor practice
* Optional courses --- Technology high-frequency and optoelectronics components, Chemical aspects of solid state, Mathematical modelling of semiconductor structures, Experimental methods of neutron diffraction in structure and texture analysis, Applied neutron diffractometry, Diffraction analysis of mechanical stress, Optical sensors, Metallic oxides 
* The main aim of the Department is to produce graduates who will have the necessary scientific background in theoretical and experimental solid state physics (especially in physics of metals, semiconductors and isolants) for science and industry. 
* The Department also organises special doctoral degree courses.
 
Research Activities: 
Main current research programme includes:
* X-ray non-destructive measurement of macroscopic residual stresses due to the working of such metallic materials as steel, cast iron, Al-alloys and brass
* neutron diffraction study of superconductors, zeolites, magnetic materials and quantitative texture analysis
* development of semiconductor detectors and their application to ionizing radiations
* research into defects and impurities in single crystals, ceramics, and thin films of dielectric materials by using optical spectroscopy

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Department of Physical Electronics

Location:
V Holešovičkách 2, 180 00 Prague 8. Tel: +420 2 2191 2270,
Fax: +420 2 688 4818, email:
kfe@troja.fjfi.cvut.cz

Staff:
Head: Prof. Ing. Miroslava Vrbová, CSc.
5 professors, 14 associate professors, 19 academics,
9 technicians and administrators

Bachelor, Master and Doctoral Degree Programmes:
The Department of Physical Electronics conducts instruction at three levels:
• Bachelor Degree Programme (3.5 years):
  Instruments and Informatics
  Laser Technology and Optoelectronics
• Master Degree Programme (5.5 years):
  Physical Electronics
  Informatics in Physics
• Master Degree Programme (2.5 years):
  Information Technology - linked to Bachelor  Degree Programme Instruments and Informatics
• Doctoral Degree Programme:
  Physical Electronics
  Informatics

Lectures and seminars are followed by laboratory work. Students are given opportunities to participate in research projects in laboratories (individual student research projects, seminars, degree thesis). The main objective of the programmes is to provide a suitable environment and necessary guidance enabling the students to become creative and independent.

Research Activities:
     All the research activities are supported either by the grants on projects or by the institutional budged in the frame of the long term CTU research plans: (No.12) Transdisciplinary Research in the Field of Biomedical Engineering, (No.15) Measurements and Instruments, (No.18) Mathematical Methods and Fundamental Experiments in Physics of Microworld, (No.19) Application of Radionuclides  and Ionizing Radiation, (No.21) Diagnostics of materials and (No.22) Laser Systems and their Applications.

 The  research themes may be specify as follows:
• Information Physics
• Ion Beam Modification and Analysis of Materials
• Diffractive and Nonlinear Optics
• X-ray Optics and Diagnostics
• Molecular Electronics and Spectroscopy
• Satellite Laser Ranging
• Picosecond Timing  and Detector Technology
• Solid State Lasers and their Medical Applications
• Short Pulse Solid State Lasers
• Capillary Discharge for X-Ray Laser Pumping
• Laser Technology
 
 Laboratories and main research facilities:
• Student personal computer laboratory 
• Student Unix  computer laboratory 
• X-ray Tomograph (Laboratory of  Prague Tomography Center)
• FS/FL 900 Spectrofluorimeter
• 100 keV Ion beam equipment
• One experimental channel of Van de Graaf accelerator (of Charles University)
• Laser Plasma Research Center (Joint of CTU and  Academy of Sciences of the Czech Republic)
• Lidar (Joint Laboratory of FNSPE and  Lidar Company)
• Laboratory of the Laser Technology Center-Prague (Joint Laboratory of CTU and LAO Company)

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Department of Materials

Location:
Trojanova 13, 120 00, Prague 2, Tel: +420 2 2435 8201 to 9,
Fax: +420 2 2435 8523,  e-mail:
office@kmat.fjfi.cvut.cz

Staff:
Head: Prof. Ing. Ivan Nedbal, Csc.
Teaching: 7 (1 professor, 3 readers, 3 senior lecturers, 3 part-time senior lecturers), 3 external members of staff
Research: 2 + all teachers are engaged in research
Other:  5

Master’s Degree programme (main courses):
* Third year --- Physics of solids, Engineering mechanics, Mechanics of deformable bodies, Testing of materials 
* Fourth year --- Physical metallurgy, Mechanical behaviour of materials, Applied probability and statistics, Stress analysis and experimental methods, Fracture mechanics, Computer mechanics 
* Fifth year --- Materials engineering, Advanced physical metallurgy, Damage processes, Theory of reliability, Special topics and seminars 

Students at both master and doctoral levels are provided with an education emphasising the fundamentals and principles of structure/property relationship in theoretical and experimental study of damage processes.  They are orientated towards the application of computer mechanics and to experimental methods of research into the reliability of mechanical systems, in materials engineering and in development of new technologies.

Research Activities:
Research activities of the Department are directed towards damage mechanics applied to studying the reliability of mechanical systems. Fatigue crack initiation and growth under variable loadings are studied by means of mathematical modelling of stress and strain fields on the crack tip, probabilistic approach to the damage process, experimental studies and microfractography.  The well-equipped fractographic laboratory has very close ties with industry, especially in the areas of failure analysis and fractographic reconstruction of fatigue process history.

Experimental devices.
1. Scanning electron microscopes JEOL JSM-840A, JSM-50A. Appl.: Qualitative and quantitative fractography, metallography and microstructure study, surface study.
2. X-ray energy dispersive analyzer EDAX. Appl.: Electron beam microanalysis of chemical composition, microstructure study.
3. Matallographical optical microscopes (Reichert MeF2, Zeiss Neophot 32). Appl.: Metallography, microstructure study.
4. Hardness testers (Vickers-Brinell, Rockwell), microhardness testers (O.P.L., Durimet, Hanneman). Appl.: Hardness and microhardness measurement and its applications.
5. Fatigue testing machine Inova. Appl.: Study of fatigue properties of materials.
6. SF-Test (developed at the Dept. of Materials). Appl.: Study of fatigue properties of surface layers, deposites, and coatings.
7. Deformation testing machine WPM. Appl.: Tensile testing of materials.
8. Auxiliary devices for specimen preparation.

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Department of Dosimetry and application of Ionizing Radiation

Location:
Břehová 7, 115 19 Prague 1, Tel: +420 2 2231 4132,
Fax: +420 2 2232 0861, e-mail:
kdaiz@br.fjfi.cvut.cz

Staff:
Head: Doc.Ing. Tomáš Čechák, CSc.
Teaching: 6 (2 professors, 2 readers, 2 senior lecturers),
4 external part-time staff
Research: 7
Other:  4

Master’s Degree programmes (main courses):
* Third year --- Nuclear and radiation physics, Principles of nuclear electronics, Principles of radiation dosimetry, Radiation detectors, Physics of non-ionising radiation
* Fourth year --- Integrating methods in dosimetry, Nuclear instrumentation, Biological effects of radiation, Radiation protection, Environmental radioactivity, Dosimetry of nuclear installations, Mathematical and computational methods in dosimetry, Applications of radiation in science, medicine and industry, Methods of analytical measurements, Physics of radiation shielding, Radiation hygiene, Principles of radiotherapy 
* Fifth year --- Metrology of ionizing radiation and radionuclides, Measurements of low-level radioactivities, Radioactive wastes, Spectrometry in dosimetry, Methods of internal dosimetry, Clinical dosimetry, Principles of nuclear medicine, Quality assessment in medical applications, Signal processing, Project (in the Department or in collaborating research institutions, medical establishments or industry) 
 
The Department of Dosimetry and Application of Ionizing Radiation conducts instruction at the three levels:
• Bachelor’s Degree programme  --- Radiation Protection and the Environment
• Master's  Degree programmes --- Dosimetry and Application of Ionizing Radiation  --- Radiation Physics in Medicine
• Doctoral Degree programme
 
 The main aim of the Department is to produce graduates who have the necessary scientific training in dosimetry, radiation protection and applications of radiation in science, medicine and technology. 
 The Department also organizes special life-long learning courses, e.g., planning for nuclear emergencies, dosimetry and radiation protection.
 
 
Research Activities:
• gamma radiation dosimetry, in-situ spectrometry and radioanalytical methods in environmental monitoring
• X-ray fluorescence analysis
• evaluation and monitoring of radon in the environment and dwellings
• application of radiation and radionuclides and radiation safety in medicine
• radiation fields generated by the microtron and their application
• radiation damage and high dose measurements
• radiation transport calculations using the Monte-Carlo method
• nuclear detectors and instrumentation
• radiation methods in research of ancient monuments
 
Laboratories and main research facilities:
• Microtron Laboratory
• Laboratory of Quantitative Methods in Research of Ancient Monuments
• Laboratory for Ionizing Radiation Spectroscopy
• Student computer laboratories with PC

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Department of Nuclear Chemistry

Location:
Břehová 7, 115 19 Prague 1, Tel: +420 2 223 17626,
Fax: +420 2 2232 0861, e-mail:
kjch@br.fjfi.cvut.cz

Staff:
Head: Prof. Ing. Petr Beneš, DrSc.
Teaching: 7 (3 professors, 2 readers, 2 senior lecturers), a number of external members of staff also participate in teaching; a major part of the basic courses in inorganic, organic and analytical chemistry is taught at Charles University, Faculty of Science
Research:  9 (some also participate in teaching)
Other: 1

Master’s Degree programme (main courses):
* First two years --- Mathematics, Physics, Inorganic, organic, analytical and physical chemistry, Biochemistry 
* Third year --- Nuclear physics, Nuclear chemistry, Dosimetry and detection of ionizing radiation, Physical chemistry, Instrumental methods of research, Principles of nuclear power plants
* Fourth year --- Separation methods, Trace chemistry, Radiation chemistry, Technology of fuel cycle, Radioanalytical methods, Environmental chemistry and radiation hygiene, Radioanalytical methods, Research project. Optional subjects:  Transport processes, Application of radionuclides, Chemistry of nuclear power plants, Aplication of radiation methods, Modelling of separation and migration processes, Chemistry of radioactive elements 
* Fifth year --- Optional subjects: Theoretical radiation chemistry, Technology of nuclear materials, Radiological protection, Production of radionuclides, Industrial application of radionuclides, Determination of radionuclides in the environment, Simulation of biogeospherical processes, Degree project

Graduates from the Department have a good scientific background and sufficient practical training for working in radiochemical and chemical laboratories. They are able to use radiochemical and chemical methods for solving analytical, environmental, physico-chemical, technological and other problems. 
The Department has a long tradition of organising doctoral degree courses in nuclear chemistry.  

Research Activities:
The principal research activity has been focussed on the separation of radionuclides and isotopes, radioanalytical methods, the application of radionuclides in chemical research, radioecology, applied radiation chemistry and the speciation and migration of radionuclides and trace elements in the environment

Laboratories and equipment
1. Radiochemical laboratory with basic equipment (radiochemical hoods, glove boxes, lead shieldings, radiation detection and monitoring instrumentation, etc.)
2. Nuclear spectroscopy laboratory (gamma-, X-, and alpha- rays spectrometers with PC-based multichannel analysers)
3. Low-level counting and spectrometry laboratory (gamma-ray spectrometer with low-background shielding, low-level alpha/beta counting system)
4. Analytical laboratory (Atomic Absorption Spectrometer with flame and furnace atomisers, High Performance Liquid Chromatography, Gas Chromatography, spectrophotometers, etc.)
5. Solid state analysis laboratory (X-ray diffraction analyser, thermoanalyser, specific surface analyser, etc.)

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Department of Nuclear Reactors

Location:
V Holešovičkách 2, 180 00 Prague 8. Tel: +420 2 688 1075,
Fax: +420 2 688 0764, e-mail:
kjr@troja.fjfi.cvut.cz
 
Staff:
Head: Doc. Ing. Karel Matějka, CSc.
Teaching: 3
Research: 4
Other:  4

Bachelor’s and Master’s Degree programmes (main courses):
* Third year --- Introduction to atomic and nuclear physics, Quantum mechanics, Nuclear Reactors, Experimental Neutron Physics, Fluid Mechanics, Thermodynamics, Heat Transfer, Introduction to Egineering,  Basic Electronics, Microprocessors.

* Fourth year --- Operational Nuclear Reactor Physics, Reactor Dynamics, Reactor Termomechanics, Machines and Equipment of Nuclear Power Plants,  Experimental Reactor Physics, Research  Work, Practical Aspects of  Nuclear Measurements,  Advanced Reactor Physics, Control of  Nuclear Power Plants, Electrical Equipment of Nuclear Power Plants, Experimental Thermomechanics, Neutron Sources for ADS, Transmutation of Actinides  and Fission Products, Liquid Nuclear Fuels and Separation of Radionuclides, Dosimetry, Selected Analytical Methods for the Monitoring of the Environment, Safety and Control Systems.  
 
* Fifth year --- Nuclear Safety, Reliability of Nuclear Power Plants, Nuclear Fuel Technology, Another Energetic Sources, Diagnostics, Radioactive Waste Management, Reactor  Operator Training Course, Computer Control of Experiments, NPP Operation Computer Simulation. The graduates are prepared for scientific and engineering work in the nuclear industry, reactor technology (including ADTT - Accelerator Driven Transmutation Technology), safety and ecology. They possess good skills in computer simulation and modelling and a physical background broad enough to be orientated to the future development of nuclear power engineering.
 
The Department also organises special postgraduate courses and participates in postgraduate study. 
 
Research Activities: 
The current research programme includes:
 
• experimental reactor physics
• computer-aided training in nuclear sciences
• mathematical modelling and simulation of the transient processes in nuclear power reactors
• accelerator driven transmutation technology (ADTT)
• control and safety systems
• impact of nuclear energy utilisation on the environment

Training reactor VR-1
The VR-1 reactor is operated particulary for the training of university students and nuclear power plant staff, R&D and information services for non-military nuclear energy.
Basic Technical Parameters of the Reactor VR-1
Power:1 kW (thermal), 5 kW for short time period
Fuel:IRT-3M type, 235U enrichment 36%
Reactor vessels:08CH18N10T stainless material, diameter 2,300 mm
height 4,720 mm
Reactor shielding:above AZ water layer 3,000 mm
side water layer about 850 mm + super
heavy concrete layer 950 mm
Temperature:The 20 °C (according to the ambient temperature)
Core cooling:with natural convection
Pressure:Atmospheric
Control system:5-7 control rods UR-70
Neutron source:Am-Be, 185 GBq, emission rate of 1.1 . 107 s-1

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Research plans
Application of Radionuclides and Ionising Radiation

Faculty of Nuclear Sciences and Physical Engineering
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2481 6806, Fax: 2232 0861
e-mail:
musilek@br.fjfi.cvut.cz

Application of Radionuclides and Ionising Radiation
(Research Plan MSM 210000019)
Project Coordinators: L. Musílek, P. Beneš, K. Matějka, S. Pospíšil, J. Král, M. Pavlík, K. Pavelka

         Radionuclides and ionising radiation now represent one of the most potential instrument in research and technologies in industry, medicine, science, as well as other fields of man's activity. They are instrumental in solving such diverse issues as, on the one hand, measuring the thickness of materials and structures, and, on the other hand, investigating biological structures at cellular level. Thus in medicine new techniques of application of ionising radiation enhance both the quality of radiotherapy, as well as the reliability and sensitivity of diagnostics.
         In the Czech Republic, owing to the scope of this field, these issues have been the centre of interest of several specialised research institutions, namely the Faculty of Nuclear Sciences and Physical Engineering, the Faculty of Natural Sciences of Charles University, the Institute of Nuclear Physics of the Czech Academy of Sciences, the Nuclear Research Institute Řež, etc. It is to be said that the above institutions vary in the field of applications, and their research is thus complementary in a sense; moreover, in most cases they closely co-operate. Historically, a most negative impact in this field was the disintegration of the Institute for Research, Production, and Exploitation of Radioisotopes in Prague, which severely limited and diminished the research potential of the country. On the other hand, it can be stated that the research capacity of the FNSPE in applications of radionuclides and ionising radiation has been undiminished, and, in some aspects, has been even enhanced due to better opportunities to enter into international projects. The past period has seen a more rapid progress in the use of radioanalytical methods and radiation technologies, the strong points of our research; however, of interest are also the results in biology and medicine. The once traditional and well-established industrial research has been brought to almost a standstill, reflecting thus more or less the state of the Czech industry. Despite this, some activities have continued, e.g. in mining and geology, etc.
          The purpose of this research plan at FNSPE is to develop further the traditional and well-established methods of using radionuclides and ionising radiation, as well as to seek new applications, namely in the environment. In this respect we have seen a long-standing traditional effort to study the radiation situation in the environment and how it is affected by man's activity, as well as an effort to use radionuclides and radiation for determining the concentration and behaviour of non-radioactive contaminants. A more recent application is seen in archaeometry and the study of monuments of the past, namely old architecture. Here the research project links up with the former project of the Ministry of Education, Youth, and Sports programme supporting research at universities No. VS 96052 "Laboratory of Quantitative Methods in Research of Historical Monuments". The project develops and investigates mainly the radioanalytical methods and radionuclide methods of dating, i.e. determining the age. Before all, the old architecture of historical interest has been investigated, however, the applicability of these methods is much wider, and can cover also other monuments of our national heritage.
          Research in radiochemistry is orientated to utilising radiotracer techniques for analyses of specific contaminants in water systems and in studies of their capture and release by solids in the environment. The use of radionuclides can be extended for studying speciation and contaminant migration in the environment.
          The research plan uses the premises of the departments and laboratories concerned. Microtron MK-25, one of sizeable facilities, is housed in a hired laboratory in the Vitkov Hill (where the geological layers provide the necessary shielding). This is a modern device supplanting an older type, comparable with accelerators of this type operating abroad. The microtron laboratory has long been engaged in performing analyses of geological samples.
           VR-1, the faculty's training reactor, is one of the most sophisticated reactors of its type operating internationally - being equipped with an advanced digital system of control. This reactor is designed first of all for training students. Its exploitation in the project is therefore less intensive. Nevertheless, it has been a source of neutrons for various applications.
 The facilities in the laboratory of ion beams connected to a Van de Graaff type accelerator (owned by the Faculty of Mathematics and Physics, Charles University) are being continuously updated. However, the accelerator proper is on the verge of its life.
          Also, use is made of the low-background gamma-spectroscopy laboratory and the laboratory of atomic absorption spectroscopy. Both use up-to-date devices, and yet new equipment will have to be provided.

The results can be grouped as:
- enhancement of the existing methods and/or processing of the new ones for  applications of radionuclides and ionising radiation
- applications of methods in interdisciplinary research
The results are assumed to be used also to trigger off grant projects and applications in real life (recommendations and information on the state of the environment, applications in industry, etc.).

The institutions and departments involved in the outline and implementation of the RP:
Dept of Dosimetry and Application of Ionizing Radiation, FNSPE, CTU
Dept of Nuclear Chemistry, FNSPE, CTU
Dept of Nuclar Reactors, FNSPE, CTU
Dept of Physics, FNSPE, CTU
Dept of Physical Electronics, FNSPE, CTU
Dept of Architectural Conservation, Faculty of Architecture, CTU
Dept of Mapping and Cartography, Faculty of Civil Engineering, CTU

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Nuclear Installations, Nuclear Safety and Radiation Protection

Faculty of Nuclear Sciences and Physical Engineering
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 688 1075, Fax: 688 0764
e-mail:
matej@troja.fjfi.cvut.cz

(Research plan: MSM 210000020)

Project Coordinators: K. Matějka, S. Vratislav, I. Nedbal, P. Beneš, T. Čechák, F. Vodák, J. Doležal

According to our new Atomic Law, by radiation safety is understood a state of a nuclear installation and its capacity, as well as the competence of its operating staff, to prevent an uncontrolled development of a fission chain reaction or a release of radioactive elements or ionizing radiation into the environment, and to limit the impacts of accidents.
In the same way, by radiation protection is understood a system of technical and organisational measures limiting the irradiation of people and of the environment. In conformity with the international trends of permanent and purposeful increase of nuclear safety and radiation protection, the Czech Republic pays a lot of attention to the safety topics, as a country with largely developed use of nuclear power and a long tradition in nuclear industry.
International cooperation of our state is oriented to the partners in countries where nuclear power engineering plays an important role, such as France, Great Britain, Belgium, U.S.A., Hungary, Russia, Slovenia, Switzerland, Japan, Sweden, Ukraine, etc. An important aspect is the link to the International Atomic Energy Agency based in Vienna. The plan investigators maintain close cooperation with this institution and participate in its events.
The research plan is based on a long term educational, scientific and research program of FNSPE CTU, reflecting at the same time the latest development and needs in the Czech Republic. There is a number of organisations involved in nuclear safety and radiation protection in the Czech Republic: The State Office for Nuclear Safety ensures the state supervision, Škoda Plzeň Nuclear Machinery is the main producer with its own research base. Also the Nuclear Research Institute in Řež and the Research Power Engineering Institute (EGU) are among the most important. There is no overlap in the activities of these institutions, as the Faculty (FJFI) concentrates on high expertise in training students and conceptual projects rather than dealing with specific orders. There is a good information exchange among the organisations concerned, with the exception of purely business matters The goals of our research plan are a safe operation of nuclear installations and an appropriate level of radiation protection. The topics to be investigated within the RP cover more precisely the following areas: safe operation of nuclear installations, system evaluation of the level of nuclear protection, optimisation of the inner fuel cycle in the VVER reactor type, electronic systems for nuclear technology, economic evaluation of NPP operation, shielding and radiation protection, quality control in nuclear power usage and material issues related to this usage, handling of burnt-up nuclear fuel including the promising transmutation technologies, increasing the safety of the burnt-up fuel treatment and nuclear waste depositing, research in granulation technology for powder inorganic materials used in nuclear waste treatment columns, NPP decommissioning, VR-1 Reactor operation and use, experimental data collecting, SW and HW development for the research reactor control and operation, machinery and electronic equipment for the NPP, material resistance and ageing of concrete constructions in the NPP.
The research plan has not been divided into time periods yet, its coordination depending on allocated funds and total space allotted to it. The research plan doesn't include any big or unique experimental installations, but it partly covers the use and operation of the VR-1 Vrabec training reactor in scientific and research projects. (However, the plan doesn't cover its "normal", prevailing use and operation for training purposes, which falls in the province of the Ministry of Education of the Czech Republic.) On the VR-1 Vrabec site, several projects financed by FRVŠ (FRVŠ = Universities Development Fund of the Czech Republic) have already been carried out with success, e.g. no 1269 in 1998 :"Modernization and partial enlargement of the reactor site. We could also mention the VS 97037 project "Quality control with highly reliable SW, which has been carried on since 1997 within the FRVŠ program. After this project is completed in 1997, the topic will be resumed in this present research plan. The field covered by this RP is so large that the research will focus on its individual topics rather than on the plan as a whole.
A typical feature of the current plan is that various establishments of rather different structure take part in the project design and its execution. However, the project ensures their close cooperation and enhances their professional ties.
The research team is divided into several groups (corresponding to the organizational structure of the University and participating faculties. The teams have large experience of training and research in nuclear power engineering and its applications. They consist of professors, readers and engineers from the ranks of academics, scientists and specialists of participating departments. They guarantee the research plan a long-term stability.

The institutions and departments involved in the outline and implementation of the RP:
  • Dept of Solid State Engineering, FNSPE, CTU
  • Dept of Materials, FNSPE, CTU
  • Dept of Nuclear Chemistry, FNSPE, CTU
  • Dept of Dosimetry and Application of Ionizing Radiation, FNSPE, CTU
  • Dept of Electroenergetics, Faculty of Electrical Engineering, CTU
  • Dept of Physics, Faculty of Civil Engineering, CTU
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Characterization of Materials

Faculty of Nuclear Sciences and Physical Engineering
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2191 2380, Fax: 2191 2407
e-mail:
vratisla@troja.fjfi.cvut.cz

(Research plan: MSM 210000021)

Project Coordinators: S.Vratislav, I. Nedbal, J. Král

The availability of materials as well as their properties have always been a limiting circumstance in practical application of research results and implementation of engineering projects. For this reason, in all industrial countries of the world, permanent attention has been given to material technology and to the study of material properties both in fundamental and applied research.The available information sources and the present structure of research institutions and laboratories show that the activities aimed at thorough knowledge of material properties are concerned mostly with single experimental methods or application fields of selected materials. The fundamental idea of this RP is to eliminate this atomized state and join experimental and personnel facilities of a number of institutions into a complex system of material diagnostics.The obtained knowledge will be applied to the processes of improving or degrading material properties, to the failure on the level of microstructure and/or bodies, with the aim to solve problems of lifetime and reliability of structures.We have no information about a similar project either in the CR or abroad. Possible overlaps with the activities of other institutions are likely in fields of the development of single methods, but not in the general conception of the RP. However, a partial overlap is considered useful and welcome due to the possibility of comparing both methodological procedures and results. A number of CTU laboratories will participate in the RP both by their experimental and methodological potentials and their research activities. The project is aimed at their all-round utilization.The objectives are to obtain a wide range of information and knowledge in the field of material science.Thus, material diagnostics will use structural, phase, strain and texture analyses, quantitative fractography, then research into failure processes as well as measurement of optical, mechanical, electrical and magnetic properties and searching their mutual relationships.At the same time it is necessary to pay attention to the research and development of new or modified methods of material diagnostics and the methodology of processing and presenting final information.

The institutions and departments involved in the outline and implementation of the RP:

Dept of Materials, FNSPE CTU
Dept of Solid State Engineering, FNSPE, CTU
Dept of Physical Electronics, FNSPE, CTU
Institute of Material Engineering, Faculty of Mechanical Engineering, CTU
Dept of Mechanics and Material Science, Faculty of Electrical Engineering, CTU
Dept of Electroctrotechnology, FEE, CTU
Dept of Physics, Faculty of Civil Engineering, CTU

The individual subject matters of co-operating departments define the following fields of research problems:

Theoretical and experimental research on failure processes of in various kinds of construction materials (mainly for aviation and energetics), including further development of methods for lifetime prediction of components and structures.The department in question is unique of its type in this country and has a 30-year-old tradition.
Diffraction tensometric diagnostics of metals and ceramic materials as a part of complex research on properties of new engineering technologies. No other Czech institution or department has better facilities and/or experience in this field.
The Laboratory of Neutron Diffraction (Faculty of Nuclear Sciences and Physical Engineering CTU Prague) was established thirty years ago and it is unique in this research fields. It is located at the Institute of Nuclear Research in Řež near Prague. The research activities at the Laboratory is focused on the use of neutron diffraction for structural studies of technologically interesting materials, including magnetic ordering and transition parameters.
Research into optical properties of solids, recently intensified in physics, resulting from new discoveries in this field and possibilities of their applications, such as saving and processing information, finding new materials and their use in optoelectronics, using colour centres and radiation-induced defects for the construction of new kinds of lasers etc.
Analysis of materials by high energy light ion beams to obtain element composition and its depth concentration profile in thin layers and distribution over the surface, and hydrogen concentration in thin films.
Summary of research activities and results obtained during the last two years are given in [1,2].

[1] Vratislav, S., Nedbal, I., Král, J. et al.: Characterization of materials (1), Research Report, FNSPE CTU, Januar 2000, Prague.
[2] Vratislav, S., Nedbal, I., Král, J. et al.: Characterization of materials (2), Research Report, FNSPE CTU, Januar 2001, Prague.

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Laser Systems and their Application

Faculty of Nuclear Sciences and Physical Engineering
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 21912269, Fax: 2191 2252
e-mail:
vrbova@troja.fjfi.cvut.cz

(Research plan: MSM 210000022)

Project Coordinators: M. Vrbová, V. Kubeček

The project incorporates a strategy-oriented fundamental research in laser physics and technology. The common denominator of this research is interaction of coherent optical radiation with matter, being the basis of both selected applications and theory for a search of new laser active media. The objectives are: new findings about non-conventional solid state media for lasers and optoelectronics, new laser systems for selected applications, new procedures for advanced production technologies, plasma as an active medium for X-ray lasers, optical and X-ray diagnostics and electronic information processing. Current research activities can be divided as follows:

  1. Solid State Lasers for Selected Applications (High power diode pumped Nd:YAG laser, Electro-optic Q-switched Er:YAG laser, Ho:YAG laser for medical applications)
  2. Research of X-Ray Laser (Capillary discharge, Computer modeling of plasma for X-ray lasers, X-ray diagnostics)
  3. Optical Spectroscopy (Luminescence kinetics, Development of time resolved nanosecond spectroscopy apparatus)
  4. Optical Materials and Elements (Preparation of planar wave-guides in LiNbO3 by ion implantation)
  5. Diffractive and Nonlinear Optics (Coherent processing of data, Investigation of non-linear properties of X:BaTiO3)
  6. Fast Optical Detectors (Development of special solid state single photon detectors)
  7. Electronic Systems (Computer control of laser radar, electronics for solid state lasers, HV charging power supply for capillary discharge)
  8. Laser Systems in Industrial Metrology (Laser beam profiling, Atmospheric distortions, Object distortion diagnostics)

This Research plan is based on the wide cooperation with other departments of FNSPE and other CTU faculties. Namely, the stage H is solved by the research team from the Faculty of Civil Engineering. Researchers from the Faculty of Mechanical Engineering take part in the stage F, and researchers from the Faculty of Electrical Engineering cooperate on the stages D and E. Most of 45 participating researchers have acquired long experience, having worked on various projects in their field and are held in high esteem internationally. In solving the issues, all the participating institutions involve also their PhD students. The team has active scientific contacts with universities and research institutions in USA (University of New Mexico), France (University of Limoges), Italy (University of Pavia), Russia (Institute of Physics RAS) etc. Almost 200 original publications has been prepared since the beginning of the project in the year 1999. The selected list of publications follows:

  1. Černý, P. - Jelínková, H.: Comparison of stimulated Raman scattering of picosecond pulses in gaseous and solid state media. In: SPIE Proceedings, Vol. 4016. 2000. p. 453-458. - ISBN 0-8194-3641-0
  2. Kubeček, V. - Jelínková, H. - Takagi, Y. - Agnesi, A. - Kokta, M.: Continuously pumped Cr:YAG laser. In: SPIE Proceedings, Vol. 4016. 2000. p. 354-359. - ISBN 0-8194-3641-0
  3. Iskakov, A. - Tishkin, V. - Lebo, I. - Limpouch, J. - Mašek, K. - Rohlena, K.: Two-dimensional model of thermal smoothing of laser imprint in a double-pulse plasma. In: Phys. Rev. E. 61, No. 1, (2000) p. 842-847. ISSN 1063-651X
  4. Vrba, P. - Vrbová, M.: Z-Pinch Evolution in Capillary Discharge. In: Contributions to Plasma Physics. 40, No. 5-6, (2000) p. 581-595. ISSN 0863-1042
  5. Kálal, M. - Vrbová, M. - Jančárek, A. - Limpouch, J. - Pína, L. - Šiňor, M. - Vrba, P. - Drška, L. - Nádvorníková, L.: Optical Diagnostics of Evacuated Polyacetal Capillary Discharge. In: XXVI European Conference on Laser Interaction with Matter. Book of Abstracts. Praha: ČVUT, Fakulta jaderná a fyzikálně inženýrská. 2000. p. 163.
  6. Bryknar, Z., Trepakov V., Potůček, Z.,. and Jastrabík L.: Luminescence spectroscopy of SrTiO3:Mn4+, J. Luminescence, 87-89 (2000), 605-607.
  7. J. Schröfel, J. Špirková, Z. Burian, "Optické planární vlnovody na bázi výměny iontů Li+ - Na+ ve skle", Konference Optické komunikace O.K.´2000, 115.11.2000, Praha, 2000, Sborník konference s. 108-112
  8. Richter, I. - Ryzí, Z. - Fiala, P.: Diffraction on a surface-relief grating: mechanisms and interpretation. In: SPIE Proceedings, Vol. 4016. 2000. . - ISBN 0-8194-3641-0
  9. Kunimori, H. - Green, B. - Hamal, K. - Procházka, I.: Centimeter precision eye-safe satellite laser ranging using a Raman shifted Nd:YAG laser and germanium photon counter. In: Journal of Optics
  10. Pure and Applied Optics. 2, No. 1, (2000) p. 1-4. ISSN 1464-4258
  11. Čech, M.: Laser Radar Control System. In: Proceedings of Workshop 2000. Vol. A. Prague: CTU. 2000.
  12. 220. - ISBN 80-01-02229-3, presented to the 12-th Interntional Workshop on Laser Ranging, Matera, Italy, November 13-17, 2000
  13. Hánek, P.- Bouška, P. - Kašpar, M.: Statische Brückenprüfung mittels räzisionsnivellements. In: Schnädelbach, K. - Schilcher, M. (red.): XIIII. Ingenieurvermessung 2000. International Course on Engineering Surveying. Verlag Wittwer, Stuttgart 2000, s. 323-328. ISBN 3-87919-270-7.

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Department of Mathematics
Mathematical Physics I

Location:
Trojanova 13, 120 00, Prague 2, Tel: +420 2 2435 8540,
Fax: 2491 8643,  e-mail: havlicek@km1.fjfi.cvut.cz

Staff:
M. Havlíček (DI), P. Šťovíček (DI), F. Gemperle
Part-time staff: P. Exner (DI), J. Dittrich (DI), P. Šeba(DI), M. Znojil (DI), M. Tater, J. Horáček, P. Duclos, M. Vittot
PhD students: M. Krbálek, D. Krejčiřík
Students: O. Lev, P. Vytřas

The research activities of the Mathematical Physics I Group cover mainly:
  • Schrödinger operators
  • quantum chaos
  • quantum dots, quantum wave-guides
  • quantum resonances
Active international cooperation is maintained with Universität Bonn, Universität Essen, Germany, Université de Toulon et Var, Université Paul Sabatier, Toulouse, France, Technion Haifa, Israel.
The research is coordinated at CTU under the Research Plan "Mathematical Methods and Fundamental Experiments in the Microworld", MSM 210000018.

Projects supported by grants:
Šťovíček, P.: "Arithmetical, geometrical and topological properties of some quantum systems", grant MSMT/Barrande No. 2000 -034-2
Tolar, J.: "Modernization of project education at DI", CTU grant No. IG 300013304
Exner P.: "Quantum graphs and related systems", AS CR grant No. 1048801
Horáček, J.: "Resonance processes in small melecules", GA CR grant No. 203/00/1025 (partially)

List of Selected Publications and Conference Contributions:
Dabrowski, L., Šťovíček, P., Aharonov-Bohm effect with delta-type interaction, J. Math. Phys. 39, 1998, 47-62.
Dittrich, J., Duclos, P., Gonzalez, N., Stability and instability of the wave equation solutions in a pulsating domain. Rev. Math. Phys. 1998.
Duclos, P., Šťovíček, P., Vana, O., About a resolvent formula. In Mathematical Results in Quantum Mechanics, eds. J. Dittrich, P. Exner, M. Tater, Operator Theory, Advances and Applications Vol. 108, Basel: Birkhäuser Verlag, 1999. 221-226.
Duclos, P., Šťovíček, P., Vittot, M., Perturbation of an eigen-value from a dense point spectrum: a general Floquet Hamiltonian . Ann. Inst. H. Poincaré 71, 1999, 241-301.
Duclos, P., Šťovíček, P., Vittot, M., Perturbation of an eigen-value from a dense point spectrum: an example, J. Phys. A: Math. Gen. 30, 1997, 7167-7185.
Durand, Ph., Paidarová, I., Jolicard G., Gemperle, F., Iterative determination of several interior eigenstates of large matrices: application to the determination of light induced resonances. J. Chem. Phys. 112 (5), 2000, 7363.
Exner, P., et al., Topologically induced vortex magnetance of a quantum device. Phys. Rev. Lett. 80, 1998, No.5.
Exner, P., Geyler, V.A., Berry phase for a potential well transported in a homogeneous magnetic field. Phys. Lett. A276, 2000, 16-18.
Exner, P., Geyler, V.A., Berry phase in magnetic systems with point interactions. . Geom. Phys. 36, 2000, 178-197.
Exner, P., Kovařík, H., Magnetic strip waveguides. J. Phys. A33, 2000, 3297-3311.
Gadea, F.X., Gemperle, F., Berriche, H., Villarreal, P., Barrio, G.D., Vibronic shifts for LiH in X and A states. J. Phys. B 30, 1997, L427.
Gemperle, F., Gadea, F.X., Durand, Ph., Non-optimized complex absorbing potentials for quantum resonances. Chem. Phys. Lett. 291, 1998, 517.
Gemperle, F., Gadea, F.X., Beyond Born-Oppenheimer spectroscopic study for the C state of LiH. J. Chem. Phys. 110 (1999) 11197.
Müller, M., Pichugin, K.A., Rotter, I., Šeba P., Collective modes in an open microwave billiard. Phys. Rev. E61, 2000, 66-70.
Pichugin, K.A., Středa, P., Šeba, P. Sadreev A.F., Resonance behavior of the Hall-like resistance induced by spin-orbit interaction in a four terminal junction. Physica E6, 2000, 727-730.
Šeba, P., et al., Distribution of the wave function inside chaotic partially open sets. Phys. Rev. E 56, 1997, p. 2680.
Znojil, M., Perturbation theory for quantum mechanics in its Hessenberg-matrix representation. Int. J. Mod. Phys. A 12, 1997, p.299.
Znojil, M., Quasi-exactly solvable quartic potentials with centrifugal and Coulombic terms. J. Phys. A33, 2000, 4203-4211.
Znojil, M., Short-range oscillators in power-series picture. J. Phys. A33, 2000, 1647-1659.

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Mathematical Physics II

Staff: M. Havlíček(DI), J. Tolar (DI), Č. Burdík (DI), L. Hlavatý (DI), P.Šťovíček(DI), E. Pelantová, S. Pošta, V. Svoboda
Part-time staff: A.U. Klimyk, O. Navrátil, J. Patera, V. Tolstoj, P. Winternitz
PhD student: L. Šnobl
Undergraduate students: J. Hrivnák, V. Kavka, M. Korbelář, H. Lavička, K. Maršálek, P. Novotný, J. Šála

The research activities of the group Mathematical Physics II cover mainly:

  • quantum symmetries and related algebraic structures
  • representations and realizations of generalized symmetries
  • non-linear integrable models in classical and quantum physics, classical chaos
  • gradings of Lie algebras, graded contractions

Active international cooperation is maintained with Technische Universität Clausthal, Germany; Université Paris VII, France; Université de Montréal, Canada; Joint Institute for Nuclear Research, Dubna, Russia; University of Bialystok, Poland.

The research is coordinated at CTU under the Research Plan "Mathematical Methods and Fundamental Experiments in the Microworld", MSM 210000018.

Projects supported by grants:
Tolar, J.:"Rigorous models of integrable and chaotic systems", GA CR grant No. 202/96/0218
Tolar, J.: "Topical problems of mathematics and mathematical physics", AS CR grant No. K1019601, 1996-2000
Tolar, J.: "Gradings, contractions and separation of variables", Votruba-Blokhintsev Program 2001 (JINR, Dubna)
Hlavatý, L.: "Models of field theory and string theory and their symmetries - research work of students of mathematical physics", FRVS grant No. 1003/2000

List of Selected Publications and Conference Contributions:
Č. Burdík, O. Navrátil, The q-boson realizations of the quantum groups Uq(Dn), J. Phys. A: Math Gen. 32 (1999), pp. 6141-6147.
Č. Burdík, O. Navrátil, The q-boson realizations of the quantum groups Uq(Cn), Int. J. Mod. Phys. A 14, No. 28 (1999), pp. 4491-4500.
Č. Burdík, O. Navrátil, New q-boson realizations of the quantum groups Uq(C3), in: "New Symmetries and Integrable Models", eds. A. Frydryszak, J. Lukierski and Z. Popowicz (World Scientific, Singapore 2000) pp. 19--26.
Č. Burdík, O. Navrátil, New q-boson realizations of the quantum groups Uq(An), in: "Supersymmetries and Quantum Symmetries", eds. E. Ivanov, S. Krivonos and A. Pashnev (JINR Dubna, 2000) pp.351--357. Č. Burdík, A. Pashnev and M. Tsulaia, Auxiliary representations of Lie algebras and the BRST constructions, Mod. Phys. Lett. A 15, No. 4 (2000), pp. 281-291.
M. Havlíček, A. U. Klimyk, S. Pošta, Casimir elements of algebras Uq(so(m)), Czech. J. Phys. B 50, No. 1 (2000), pp. 79-84.
M. Havlíček, J. Patera, E. Pelantová, On Lie gradings III. Gradings of the real forms of classical Lie algebras , Lin. Alg. Appl. 314 (2000), pp. 1-47.
M. Havlíček, J. Patera, E. Pelantová and J.Tolar, On fine gradings and their symmetries, Czech. J. Phys. B 51 (2001), in print.
M. Havlíček, J. Patera, E. Pelantová and J.Tolar, The fine gradings of sl(3,C) and their symmetries, in: Proceedings of XXIII International Colloquium on Group Theoretical Methods in Physics, 31 July-5 August, 2000, Dubna, Russia, in print.
M. Havlíček, S. Pošta, On the classification of irreducible finite-dimensional representations of Uq(so3) algebra, J. Math. Phys. 42 (2001), No. 1, in print.
M. Havlíček, S. Pošta, A. U. Klimyk, Representations of the cyclically symetric q-deformed algebra soq(3), J. Math. Phys. 40, No. 4, (1999), pp. 2135-2161.
M. Havlíček, S. Pošta, A. U. Klimyk, Representations of q-deformed algebra Uq(iso2), J. Phys. A: Math. Gen. 32 (1999), pp. 1-10.
M. Havlíček, P. Winternitz, S. Pošta, Nonlinear superposition formulas based on imprimitive group action, J. Math. Phys. 40, No. 6, (1999), pp. 3104-3122.
L. Hlavatý, On the Lax formulation of generalized SU(2) principal models, Phys. Lett. A 271, No. 3 (2000), pp. 207--212.
L. Hlavatý, Principal models on a solvable group with nonconstant metric, Phys. Lett. A 275 (2000), pp. 419--423, nlin.SI/0006016.
L. Hlavatý, L. Šnobl, Solution of the Yang Baxter system for quantum double, Int. J. Mod. Phys. 14, No.19 (1999), pp. 3029-3058
L. Krlín, J.St"ockel, V.Svoboda, Stochastic E x B diffusion of ions in a spatially periodical potential field, Physica Scripta, T84(2000), p.221.
L. Šnobl: Construction of quantum doubles from solutions of Yang-Baxter system, Czech. J. of Phys. B 50, No.1 (2000), pp. 187-192.
P. Šťovíček, A construction of representations and quantum homogeneous spaces, Lett. Math. Phys. 47 (1999), pp. 125-138.
P. Šťovíček, Discrete series of representations for Uq(sl(2,R)), in: "Quantum Theory and Symmetries", eds. H.-D. Doebner, V. K. Dobrev, J.-D. Hennig, W. Lücke, (World Scientific, Singapore 2000) pp. 470-474.

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Mathematical Modelling Group

Faculty of Nuclear Sciences and Physical Engineering
Department of Mathematics
Doppler Institute (DI)/Department of Mathematics,
Department of Physics
Trojanova 13, 120 00 Prague 2, Czech Republic
Tel: +420 2 2435 8540, Fax: 2491 8643,
e-mail: benes@km1.fjfi.cvut.cz

CTU staff: M. Beneš, K. Kozel
Collaborators:F. Maršík, R.F. Holub, V. Havlena, T. Roubíček, M. Tůma, M. Rozložník, Z. Strakoš, J. Drkošová, Z. Jaňour, J. Maryška, J. Mužák, V. Wasserbauer
PhD students:J. Šembera, I. Sládek, R. Honzátko, M. Vohralík, T. Němec
5th year students: J. Mikyška, V. Chalupecký, V. Minárik, P. Rálek, M. Janda

The activities of the group cover mainly the development of numerical methods for solving complex problems in continuous mechanics, environment and technology:

  • multi-phase and multi-component fluid flow
  • first-order phase transitions in condensed matter, the growth of a microstructure
  • diffusion in a turbulent flow
  • transition to turbulence
  • non-linear phenomena leading to deterministic chaos in materials science
  • complex dynamics of reaction - diffusion systems
  • edge detection and noise filtering in image processing
  • data imaging and postprocessing

International cooperation has been established with:
  • Albert-Ludwigs-Universität Freiburg
  • Swiss Federal Institute of Technology at Lausanne
  • Colorado School of Mines
  • Slovak Technical University
  • Université Paris Sud Orsay
  • University of Hiroshima
  • Universidad Miguel Hernández, Allicante

Recent projects supported by grants:
  • Radioactive Aerosol Wall Deposition; Theoretical Description of the Phenomenon", 1.6.93 - 31.5.97, US-Czechoslovak Science and Technology Program, grant No. 92042, principal investigator M. Beneš,
  • Mathematical Modelling of Transport and Reactions of Chemicals in Polluted Underground ", 1996-1998, GAČR, 205/96/0921, principal investigator J. Maryška,
  • Applied Mathematics in Technical Sciences", since 1999, Ministry of Education, J04/98210000010, principal investigator K. Kozel
  • Numerical Methods for Phase-Field Model of Microstructure Growth in Solidification", CINECA European Supercomputinmg Centre, No. 00/919-7, Bologna, principal investigator M. Beneš, 2001
  • Mathematical Modelling and Numerical Simulation of Free Boundary Problems with Application in Metallurgy", project No. 210/01/0676 of the Grant Agency of the Czech Republic, principal investigator M. Beneš, 2001-2003
  • Analyse mathématique de quelques problemes d'evolution intervenant en transition de phase et en biologie ", project Barrande No. 2001-036-1, principal investigators F. Issard-Roch and M. Beneš, 2001-2002

List of selected publications and conference contributions:
Beneš, M., Holub, R.F. Aerosol Wall Deposition in Enclosures Investigated by Means of a Stagnant Layer. In Environment International. 1996. Vol. 22, Suppl. 1, pp. S883-S889
Maryška, J., Rozložník, M., Tůma, M. The potential fluid flow problem and the convergence rate of the minimal residual method, In Num. Lin. Alg. Appl. 1996, Vol. 3, pp. 525-542.
Beneš, M., Stýblo, M., Maryška, J., Mužák, J. The application of mathematical models of the transport of chemical substances in the remediation of consequences of the uranium mining. In Proceedings on 3rd Workshop on Modelling of Chemical Reaction Systems, Heidelberg, July 1996; also available on http://www-reaflow.iwr.uni-heidelberg.de/modelling/
Beneš, M., Mikula, K. Simulation of Anisotropic Motion by Mean Curvature - Comparison of Phase Field and Sharp Interface Approaches. In Acta Mathematica Universitatis Comenianae. 1998, Vol. 67 No. 1, pp. 17-42.
Beneš, M. and Šembera, J. Nonlinear Galerkin Method for Reaction-Diffusion Systems Admitting Invariant Regions, to appear in Journal of Computational Mathematics, 2001
Beneš, M. Mathematical analysis of phase-field equations with numerically efficient coupling terms. In Interfaces and Free Boundaries. 2001, Vol. 3, pp. 1--21
Beneš, M.. Numerical solution of phase-field equations with a gradient coupling term. In Partial Differential Equations - Theory and Numerical Solution, eds. Jäger, W., Nečas, J., John, O., Najzar, K., Stará, J., Chapman&Hall/CRC, New York, 2000. pp. 25--33 (Chapman&Hall/CRC Research Notes in Mathematics 406, ISBN 1-58488-022-8)
Beneš, M. Anisotropic phase-field model with focused latent-heat release. In FREE BOUNDARY PROBLEMS: Theory and Applications II, GAKUTO International Series Mathematical Sciences and Applications Vol.14, Chiba, 2000. pp. 18-30
Vohralík, M., Maryška, J., Severýn, O. Mixed-Hybrid Model of the Fracture Flow. In Proceedings of ALGORITMY 2000, Conference on Scientific Computing, Slovak Technical University, Bratislava, 2000. pp. 75-84 (ISBN 80-227-1391-0)
Honzátko, R., Janda, M., Kozel, K. Numerical Solution of 2D Steady and Unsteady Flows Using Composite Scheme. In Proceedings of ALGORITMY 2000, Conference on Scientific Computing, Slovak Technical University, Bratislava, 2000. pp. 68-74 (ISBN 80-227-1391-0) More information available on http://kmdec.fjfi.cvut.cz/~mmg/

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Algebraic and Combinatorial Methods

Faculty of Nuclear Sciences and Physical Engineering
Department of Mathematics
Doppler Institute (DI)/Department of Mathematics,
Department of Physics
Trojanova 13, 120 00 Prague 2, Czech Republic
Tel: +420 2 2435 8540, Fax: 2491 8643,
e-mail: burdik@km1.fjfi.cvut.cz ,pelantova@km1.fjfi.cvut.cz

Staff: Č. Burdík, Z. Masáková, E. Pelantová
Part-time staff: C. Frougny, J.-P. Gazeau, L.-S. Guimond, Jiří Patera, R. Twarock
PhD students:M. Andrle, O. Mareš, Jan Patera
5th year students: P. Ambrož, P. Baláži, J. Čechová, M. Svobodová, J. Zich

The research activities of the Algebraic and Combinatorial Methods group cover mainly:

  • aperiodic structures modeling quasicrystals, cut and project sets, tilings
  • representations of numbers in systems with non-integer basis, arithmetics on beta-expansions
  • combinatorial properties of symbolic sequences of low complexity
  • aperiodic pseudo-random number generators
  • quasiperiodic wavelets

Active international cooperation is maintained with Centre de recherches mathématiques, Université de Montréal, Canada; Université Paris VII, France.

The research is coordinated at CTU under the Research Plan "Mathematical Methods and Fundamental Experiments in the Microworld", MSM 210000018.

Projects supported by grants:
Burdík, Č.: "Some aspects of quantum groups and self-similar aperiodic structures", GA ČR grant No. 201/01/0130
Mareš, O.: "Rozvoj možností studia waveletů a metod v modelování nekrystalických látek", FRVŠ grant No. 1926/2001
Patera, J.: "Aperiodické generátory náhodných čísel", FRVŠ grant No. 1927/2001

List of Selected Publications and Conference Contributions:
Burdík, Č., Frougny, C., Gazeau, J.-P., Krejcar, R.: Beta-integers as natural counting systems for quasicrystals. J. Phys. A 31, 1998, p. 6449.
Masáková, Z., Patera, J., Pelantová, E.: Minimal distances in quasicrystals. J. Phys. A 31, 1998, p. 1539.
Masáková, Z., Patera, J., Pelantová, E.: Inflation centers of the cut and project quasicrystals. J. Phys. A 31, 1998, p. 1443.
Masáková, Z., Patera, J., Pelantová, E.: Selfsimilar Delone sets and quasicrystals. J. Phys. A 31, 1998, p. 4927.
Masáková, Z., Patera, J., Pelantová, E.: Substitution rules for aperiodic sequences of the cut and project type. J. Phys. A 33, 2000, p. 8867.
Masáková, Z., Pelantová, E., Svobodová M.: Characterization of cut and project sets using a binary operation. Lett. Math. Phys., 54, 2001, 1-10.
Masáková, Z., Patera, J., Pelantová, E.: Exceptional algebraic properties of three quadratic irrationalities observed in quasycrystals, Canadian J. Phys., 79, 2001 to appear.
Guimond, L.-S., Patera Jan, Patera Jiří: Combining random number generators using cut and project sequences, Czech. J. Phys. 51 (2001), in print.
Andrle M., Burdík Č., Gazeau J.-P., Krejcar R.: Wavelet multiresolution for the Fibonacci chain, J. Phys. A 33, 2000, p. L47.
Andrle M.: Building Pre-wavelets on the Fibonacci chain, Czech. J. Phys. 51 (2001), in print. Patera, J., Pelantová, E., Twarock, R.: Quasicrystal Lie Algebras, Phys. Lett. A, 1998, p. 209.
Gazeau, J.-P., Patera, J., Pelantová, E.: Tau-wavelets in the plane, J. Math. Phys. 39, 1998, p. 4201.

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Stochastic Modelling Group

Faculty of Nuclear Sciences and Physical Engineering
Department of Mathematics
Doppler Institute (DI)/Department of Mathematics,
Department of Physics
Trojanova 13, 120 00 Prague 2, Czech Republic
Tel: +420 2 2435 8540, Fax: 2491 8643,
e-mail: kus@km1.fjfi.cvut.cz

Staff:V. Kůs, T. Hobza
Part-time staff: I. Vajda, D. Morales, A. Berlinet, E.C. van der Meulen
PhD students:T. Hobza, D. Stařík, I. Molina
5th year students: M. Petřík, I. Mittaschová

The research activities of the Stochastic Modelling group cover mainly:

  • Statistical point estimation and testing
  • Score functions, statistical distances, information divergences and their properties
  • Minimum divergence methods in statistics
  • Information-theoretic methods in testing the goodness of fit
  • Nonparametric density estimation, application in ATM networks
  • Digital signal processing, acoustic emission, failure detection and localization in materials

Active international cooperation is maintained with:
  • Miguel Hernández University in Elche, Elche, Alicante, Spain, Departamento de Estadística y Matemática Aplicada (Prof. Domingo Morales)
  • University of Montpellier II, Montpellier, France (Dr. Alain Berlinet)
  • Katholieke Universiteit Leuven, Lueven, Belgium (Prof. Edward C. van der Meulen)
Projects supported by grants:
  • EU COPERNICUS 579 PROJECT, "Research on ATM: Call Admission Control and Network Policing by Neural Networks and Performance Evaluation"; participating institutions: Katholieke Universiteit Leuven (KUL), Belgium, Technical University of Budapest (TUB), Hungary, Franco-Polish School of New Information (EFP), Poland, Institute of Information Theory and Automation (UTIA), Czech Rep.
  • EU SOCRATES/ERASMUS Programme 1999-2001, "Bilateral Agreement between Czech Technical University in Prague and Universidad Miguel Hernández de Elche".
  • FRVŠ 596/2000, "Collaboration with the Universidad Miguel Hernández in Spain".

List of Selected Publications and Conference Contributions:
Vajda I. (1989). Theory of Statistical Inference and Information. Kluwer, Boston.
Vajda I. and Kůs V. (1994). Dimensionality Reduction by Projecting Probability Distributions on Simple Families. Proceedings of IEEE European Workshop on Computer-Intensive Methods in Control and Signal Processing CMP'94, ITIA AS CR, Prague, pp. 53-60.
Gyorfi L., Vajda I., van der Meulen E. (1996). Minimum Kolmogorov distance estimates of parameters and parametrized distributions. Metrika, vol. 43, pp. 237--255.
Morales D., Pardo L., Vajda I. (1997). Some new statistics for testing hypotheses in parametric models. Journal of Multivariate Analysis, 62, 1, 137-168.
Kůs V. (1998). Divergence Score Functions and Robust Statistical Methods. Proceedings of Prague Stochastics'98, Union of Czech Mathematicians and Physicists, Prague, pp. 337-342.
Menendez M. L., Morales D., Pardo L., Vajda I. (1998). Asymptotic distributions of phi-divergences of hypothetical and observed frequencies on refined partitions. Statistica Neerlandica, 52, 1, 71-89.
Menendez M. L., Morales D., Pardo L., Vajda I. (1998). Two approaches to grouping of data and related disparity statistics. Communications in Statistics - Theory and Methods, 27, 3, 609-633. B Berlinet A., Hobza T. and Kůs V. (1998). About New Piecewise Linear Histograms. Proceedings of Prague Stochastics'98, Union of Czech Mathematicians and Physicists, Prague, pp. 33-38.
Berlinet A., Vajda I. and van der Meulen E.C. (1998). About the asymptotic accuracy of Barron density estimate. IEEE Trans. on Information Theory, vol. 44, No.3.
Vajda I., van der Meulen E. C. (1998). Global statistical information in exponential experiments and selection of exponential models. Applications of Mathematics, 43, 1, 23-51.
Vajda I. (1998). Global information in statistical experiments and consistency of likelihood-based estimates and tests. Kybernetika, 34, 3, 245-263.
Berlinet A., Liese F., Vajda I. (2000). Necessary and sufficient conditions for consistency of M-estimates in regression models with general errors. Journal of Statistical Planning and Inference, 89, 1/2, 243-267.
Morales D., Pardo L., Vajda I. (2000). Renyi statistics in directed families of exponential experiments. Statistics, 34, 1, 151-174. B Hobza, T., Vajda, I. (2001). On the Newcomb-Benford law in models of statistical data, Revista Matematica Complutense (in print).
Kůs V. (2001). Nonparametric Density Estimates Consistent of the Order of n-1/2 in the L1-norm. Journal of Nonparametric Statistics (submitted).
Berlinet, A. Hobza, T., Vajda, I. (2001). Generalized piecewise linear histograms. Statistica Neerlandica (submitted).

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Department of Physics
Mathematical Physics III

Faculty of Nuclear Sciences and Physical Engineering Doppler Institute (DI)
Department of Physics
Břehová 7, 115 19, Prague 1, Czech Republic
Tel: +420 2 2231 7661, Fax: 2232 0861,
e-mail: tolar@br.fjfi.cvut.cz

Staff:J. Tolar (DI), I. Jex, G. Chadzitaskos
Part-time staff: G. Alber, G. Drobný, A. Odzijewicz
Diploma student: P. Pecha
Undergraduate students: P. Luft, M. Štefaňák, S. Vymětal

The research activities of the Mathematical Physics III Group cover mainly:

  • quantization on general manifolds by differential-geometric methods
  • quantum theory on discrete structures
  • generalized coherent states
  • quantum communication (correlations, entanglement)
  • quantum optics and atom optics, quantum models

Active international cooperation is maintained with Universität Ulm; Technische Universität Clausthal, Germany; Universität Wien, Austria; FÚ SAV Bratislava; Joint Institute for Nuclear Research, Dubna, Russia; University of Bialystok, Poland.

The research is coordinated at CTU under the Research Plan "Mathematical Methods and Fundamental Experiments in the Microworld", MSM 210000018.

Projects supported by grants:
Jex, I.:"Nonlinear mappings and quantum informations", GA CR grant No. 202/01/0318
Jex, I.:"Optimal preparation and detection of quantum states", MSMT KONTAKT - Slovakia (FU SAV Bratislava)
Jex, I.:"Quantum information in higher dimensional Hilbert spaces", MSMT KONTAKT - Germany (Universitat Ulm)
Tolar, J.: "Czech-Polish cooperation in mathematical physics", MSMT KONTAKT - Poland (University of Bialystok)

List of Selected Publications and Conference Contributions:
A. Bandilla, G. Drobny, I. Jex, Quantum description of nonlinearly interacting oscillators via classical trajectories, Phys. Rev. A 55 (1997), p. 78.
A.Bandilla, G. Drobný, I. Jex, The classical parametric approximation for three--wave interactions, Optics Commun. 156 (1998), p. 112.
A.Bandilla, G. Drobný, I. Jex, Maximum energy conversion in parametric down conversion, J. Optics B 2 (2000), p. 265.
G. Chadzitaskos, A. Odzijewicz, q-deformed quantum mechanics at roots of unity, in: "Quantum Groups Symposium at Group 21", (eds. H.-D. Doebner and V.K.Dobrev) Heron Press, Sofia 1997, pp. 135-141.
G. Chadzitaskos, A. Odzijewicz, Paragrassmann star product calculation, Lett. Math. Phys. 43 (1998), pp.199-209.
G. Chadzitaskos, J. Tolar, The 2--diffraction system, Optics Commun. 187, No. 4-6 (2001), pp. 359-362.
G. Chadzitaskos, J. Tolar, Difrakčni systém, patent č. 285999, Úřad průmyslového vlastnictví, Praha 18.10.1999
H.-D. Doebner, P. Šťovíček, J. Tolar, Quantization of kinematics on configuration manifolds, Rev. Math. Phys. 13, No. 4 (2001), pp. 1-47.
M. Horne, I. Jex, A. Zeilinger, Schrodinger wave function in strong periodic media with applications to atom optics, Phys. Rev. A 59 (1999), p. 2190.
I.Jex, G. Alber, Rotational wave packet dynamics of the C60 molecule, J. Phys. B 33 (2000), p.1663. M. Konopka, I. Jex, Exact solutions for nonlinear Hamiltonians, Czech. J. Phys. B 48 (1998), p. 1537.
S. Meneghini, I. Jex, K.A.H. van Leeuwen, M.R. Kasimov, W.P. Schleich, V.P. Yakovlev, Atomic motion in longitudinally modulated light crystals, Laser Physics 10 (2000), p. 116. H. Paul, P. Torma, T. Kiss, I. Jex, Two-mode reconstruction using photon chopping, J. Mod. Opt. 44 (1997), p. 2395.
J. Tolar, Quantum mechanics in finite-dimensional Hilbert spaces: Factorization properties, in: "Coherent States, Quantization and Gravity" (A. Odzijewicz and A. Strasburger, eds.) Warsaw University Press, Warsaw, in print.
J. Tolar, Quantum mechanics on phase spaces ZN x ZN, in: "Trends in Quantum Mechanics", (H.-D.Doebner, S.T. Ali, M. Keyl and R.F. Werner, eds.) World Scientific, Singapore 2000, pp. 48-55.
J. Tolar, Translation invariant quantizations on discrete phase spaces Zn x Zn, in: "Quantum Theory and Symmetries" , (H.-D. Doebner, V.K. Dobrev, J.-D. Hennig, and W.Lucke, editors), World Scientific, Singapore 2000, pp. 524--529.
J. Tolar, G. Chadzitaskos, Quantization on ZM and coherent states over ZM x ZM, J. Phys. A: Math. Gen. 30 (1997), pp. 2509-2517.
P. Torma, I. Jex, Two-mode entanglement in passive networks, J. Mod. Opt. 44 (1997), p. 875.
P. Torma, I. Jex, Properties of Ising-type linear networks, J. Optics B 1 (1999), p. 8.
P. Torma, I. Jex, Hamiltonians for Ising-type quantum networks, J. Mod. Optics 47 (2000), p. 1.

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Experimental Nuclear Physics

Faculty of Nuclear Sciences and Physical Engineering
Department of Physics
Břehová 7, 115 19, Prague 1, Czech Republic
Tel: +42 2 22311333, Fax: 2232 0861,
e-mail: janout@br.fjfi.cvut.cz

Staff:C. Granja Bustamante, J.Jakůbek, Z.Janout, J.Koníček, S.Pospíšil, E.Ryparová, I.Štekl
External collaborators:: V.B.Brudanin (LNP JINR Dubna), Z. Doležal(FMP ChU), T. von Egidy (TU Munich), S. Jullian (LAL Orsay), A.Kovalík (INP AS CR), F. Lehar (DAPNIA Saclay), C. Leroy (Montreal University), J. Ludwig (Freiburg Univ.), H.-G. Moser (MPI Munich), K. M. Smith (Glasgow Univ.), J. Sodomka (FTS CTU), B. Sopko (FME CTU), S. A. Telezhnikov (JINR Dubna), I.Wilhelm (FMP ChU)
PhD students: J. Beneš, P. Čermák, V. Linhart, R. Otec, K. Smolek, L. Vála
5thyear student: P. Beneš, L. Rubáček, S. Greder (LPU Strasbourg)

Research activities are oriented towards nuclear and particle physics and are realized within the frame of scientific research program no. MŠM 210000018 "Mathematical models and fundamental experiments in microworld". These activities can be summarized as follows:
- Experiment ATLAS on LHC. Work is oriented on the construction of the Semiconductor Forward Tracker in the ATLAS Inner Detector and on the design of neutron shielding for ATLAS Forward Region.
- The collaboration on D0 experiment at FNAL which has recently begun.
- Polarization of nucleons in N-N elastic scattering. The experiments were performed on the accelerator SATURNE II at LNS Saclay (France) in collaboration with LNS, JINR Dubna, Univ. of Geneva, ANL, UCLA and Freiburg University. The complete set of spin-dependent observables in n-p and p-p elastic scattering between 0.3 and 2.7 GeV were measured.
- Double beta decay. Investigation of double beta decay consists of three experiments: TGV I (measurement of 48Ca), TGV II (measurement of 106Cd, EC/EC) and NEMO (measurement of 100Mo). The experiments are conducted in Modane underground laboratory (France) in close cooperation of LAL Orsay, CSNSM Orsay, JINR Dubna, INP AS CR.
- Experimental study of rare elements nuclei by means of radiative neutron capture and direct reactions. Work is done in collaboration with JINR Dubna, ILL Grenoble, TU and LMU Muenchen.

List of Selected Publications: Ball, J.; ... ; Janout, Z.; Lehar, F. et al: "Direct reconstruction of np elastic scattering amplitudes between 0.80 and 1.1 GeV", Nuovo Cimento A111 (1998) 13.
Brudanin, V.B.; Egorov, V.G.; …; Janout, Z.; Koníček, J.; Kubašta, J.; Pospíšil, S.; Štekl, I.; Vorobel, V.: "Present Status and Future of the Experiment TGV (Measurement of Double Beta Decay of 48Ca)", Czech. J. Phys. 48, 2 (1998) 165-166.
Abramov, V.; Alexeev, G.; ... ; Pospíšil, S. et.al.: "Forward muon system for the D0 detector upgrade", Nucl. Instr. and Meth. in Phys. Res. A 419 (1998) 660-666.
Cantatore, E.; Campbell, M.; Heijne, E.H.M.; ...; Pospíšil, S. et al: "Uniformity of response of the LHC1 large area pixel detector system". Nucl. Instr. and Meth. in Phys. Res. A 409 (1998) 119-128.
Abramov, V.; ... ; Pospíšil, S. et al.: "Fast Scintillation Counters for the DOE Muon system Upgrade", IEEE Trans. on Nuclear Science (USA), 46 (4) 1 (1999) 865-868.
Pospíšil, S.; Štekl, I.; Čechák, T.; Čermák, P.; Jakůbek, J.; Klusoň, J.; Koníček, J.; Kubašta, J.; Linhart, V.; Šiňor, M.; Leroy, C.; Doležal, Z.; Leitner, R.; Lukhanin, G.; Soustružník, K.; Lokajíček, M.; Němeček, S.; Palla, J.; Sodomka, J.: "Experimental Tests of Neutron Shielding for the ATLAS Forward Region", Nucl. Instr. and Meth. in Phys. Res. A 420 (1999) 249-258.
Allgower, Ch.; ... ; Janout, Z.; Lehar, F. et al: "Angular dependence of the pp elastic scattering analyzing power between 0,8 and 2,8 GeV", Phys. Rev. C60 (1999) 054001, 1-23.
Allgower, Ch.; ... ; Janout, Z.; Lehar, F. et al: "Angular dependence of the pp elastic scattering analyzing power between 0,8 and 2,8 GeV. II. Results for higher energies", Phys. Rev. C60 (1999) 054002, 1-14.
Pospíšil, S.; Bečvář, F.; Granja Bustamante, C.; Kubašta, J.; Telezhnikov, S. A.: "Secondary ? Transitions in 159Gd After Neutron Capture at Isolated Resonances", Journal of Research of the National Institute of Standards and Technology, USA, 105 (2000) 173-176.
Ropotar, I.; ... ; Jakůbek, J.; Pospíšil, S.; Sopko, B.; Štekl, I. et al.: "The LHC1 Pixel Detector Studied in 120 GeV/c Pion Test Beam", Nucl. Instr. and Meth. in Phys. Res. A 439, 2-3 (2000) 536-546.
Brudanin, V. B.; … ; Štekl, I.; Čermák, P. et al.: "Search for double beta decay of 48Ca in the TGV experiment", Phys. Letts. B 495 (2000) 63-68.
Allgower, Ch.; ... ; Janout, Z.; Lehar, F. et al: "Angular dependence of the pp elastic scattering spin correlation parameter Aoonn between 0.8 and 2.8 GeV: Results for 1.80-2.24 GeV", Phys. Rev. C60 (2000) 064001, 1-11.
Štekl, I.; Pospíšil, S.; Kovalenko, V. E.; Vorobel, V.; Leroy, C.; Piquemal, F.; Eschbach, R.; Marquet, Ch.: "Monte Carlo Simulations of Neutron Shielding for the ATLAS Forward Region". Nucl. Instr. and Meth. in Phys. Res. A 452 (2000) 458-469.

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Applied Nuclear Physics

Faculty of Nuclear Sciences and Physical Engineering
Department of Physics
Břehová 7, 115 19, Prague 1, Czech Republic
Tel: +42 2 2231 1333, Fax: 2232 0861,
e-mail: pospisil@br.fjfi.cvut.cz

Staff: J.Jakůbek, Z.Janout, J.Koníček, J. Kubašta, S.Pospíšil, E.Ryparová, I.Štekl
External collaborators:: M. Campbell (CERN), C. Froejdh (MH Sundsvall), E. Heijne (CERN), M. Glaser (CERN), Č.Jech, (IPCh JH AS CR), C. Leroy (Montreal University), J. Ludwig (Freiburg University), B. Mikulec (CERN), S. Petersson (KTH Stockholm), K. M. Smith (Glasgow University), B. Sopko (FME CTU), D. Vavřík (ITAM AS CR), J. Visschers (NIKHEF Amsterdam), M.Vobecký (IACh AS CR), I. Wilhelm (FMP ChU))
PhD students: P. Čermák, V. Linhart, I. Ndiaye
5thyear student: L. Rubáček

Research activities oriented towards applied nuclear physics are performed within the frame of the scientific research program MSM 210000018 "Application od radionuclides and ionizing radiation". These activities can be summarized as follows:
- Research and development of semiconductor detectors. GaAs detectors are a new type of detectors expected to have higher radiation hardness compared to silicon detectors. GaAs single pad and pixel detectors have been tested as part of CERN RD8 and Medipix-2 collaborations. Within the CERN RD48-ROSE collaboration the nuclear applied physics group has been intensively involved in the development of radiation hard silicon detectors.
- Development of pixel detectors and their application for imaging based on position sensitive detection of ionizing radiation. This work has been realized under the CERN Medipix-2 Collaboration.
- Analytical application of gamma spectroscopy. A new system for coincidence activation analysis was built based on NIM spectroscopic modules in connection with the data acquisition system in VME or CAMAC standards. The first analytical results have been published recently. A facility for analytical applications of prompt gamma rays from radiative neutron capture and fast neutron inelastic scattering is also available in the group.
- Applied alpha spectroscopy. This activity has been devoted to the measurements of radon and thoron daughter products in air samples and to the study of mobility and formation of the deposits of thoron daughters on solid surfaces.

List of Selected Publications:
Buttar, C.; Doležal, Z.; Krištofik, J.; Kubašta, J.; Linhart, V.; Mareš, J. J.; Pospíšil, S.; Walsh, S.; Wilhelm, I.: "Study of GaAs detector response with low energy protons", Nucl. Instr. and Meth. in Phys. Res. A 395 (1997) 21-25.
Mareš, J. J.; Krištofik, J.; Hubík, P.; Jurek, K.; Pospíšil, S.; Kubašta, J.: "High field transport in semi-insulating GaAs: A promising material for solid-state detectors", J. Appl. Phys. 82, 7 (1997) 3358-3362.
Morettini, P.; Barberis, D.; Bozzo, M.; ... ; Pospíšil, S. et al.: "Space resolution of a silicon pixel detector as a function of the track angle", Nucl. Instr. and Meth. in Phys. Res. A 395 (1997) 457-458.
Campbell, M.; Heijne, E.H.M.; Kubašta, J.; Middelkamp, P.; Pospíšil, S.; Šícho, P.; Snoeys, W.; Vrba, V.: "Silicon pixel device as a slow neutron precise position detector", Nucl. Instr. and Meth. in Phys. Res. A 395 (1997) 457-458.
Jech, Č.; Janout, Z.; Koníček, J.; Kubašta, J.; Pospíšil, S.; Vobecký, M.: "Decay Characteristics of Electrostatically Collected Samples of Radon Daughters", Collect. Czech. Chem. Commun., vol. 62 (1997) 218-222.
Jakůbek, J.; Nuiten, P.; Pluhař, J.; Pospíšil, S.; Šiňor, M.; Štekl, I.; Timoracký, S.; Vobecký, M.: "Coincidence Gamma-Gamma Spectroscopy System for Instrumental Neutron Activation Analysis", Nucl. Instr. and Meth. in Phys. Res. A 414 (1998) 261-264.
Vobecký, M.; Jakůbek, J.; Granja Bustamante, C.; Koníček, J.; Pluhař, J.; Pospíšil, S.; Rubáček, L.: "Multielement Instrumental Activation Analysis based on Gamma-Gamma Coincidence Spectroscopy", Analytica Chimica Acta 386 (1999) 181-189.
Bates, R. L.; Manolopoulos, S.; Mathieson, K.; Meikle, A.; O'Shea, V.; Raine, C.; Smith, K. M.; Watt, J.; Whitehill, C.; Pospíšil, S.; Wilhelm, I.; Doležal, Z.; Juergensen, H.; Heuken, M.: "Development of Low Pressure Vapour Phase Epitaxial GaAs for Medical Imaging", Nucl. Instr. and Meth. in Phys. Res. A 434 (1999) 1-13.
Bates, R.; Doležal, Z.; Linhart, V.; O'Shea, V.; Pospíšil, S.; Raine, C.; Smith, K.; Šiňor, M.; Wilhelm, I.: "Charge collection efficiency of GaAs detector studied with low-energy heavy charged particles", Nucl. Instr. and Meth. in Phys. Res. A 434 (1999) 34-37.
Mareš, J. J.; Krištofik, J.; Hubík, P.; Pospíšil, S.: "The role of space charge in GaAs-based particle detectors", Nucl. Instr. and Meth. in Phys. Res. A 434 (1999) 57-60.
Casse, G.; Doležal, Z.; Glaser, M; Kohout, Z.; Koníček, J.; Lemeilleur, F.; Leroy, C.; Linhart, V.; Mareš, J. J.; Pospíšil, S.; Roy, P.; Sopko, B.; Šiňor, M.; Švejda, J.; Vorobel, V.; Wilhelm, I.: "Scanning of irradiated silicon detectors using alpha particles and low-energy protons", Nucl. Instr. and Meth. in Phys. Res. A 434 (1999) 118-130.
Kundrotas, J.; Dargys, A.; Valušis, G.; Ašmontas, S.; Granja, C.; Pospíšil, S.; Koehler, K.: "Changes of MQW photoluminescence under alpha particle irradiation". Accepted for publication in Superlattices and Microstructures (Dec 2000).
Chren, D.; Juneau, M.; Kohout, Z.; Lebel, C.; Leroy, C.; Linhart, V.; Pospíšil, S.; Roy, P.; Saintonge, A.; Sopko, B.: "Study of the characteristics of silicon MESA radiation detectors". Accepted for publication in Nucl. Instr. and Meth. in Phys. Res. A (March 2000).
Dargys,A.; Kundrotas,J.; Pospíšil,S.;Smith,K.M.:"Quantum well radiation detectors: assessment and perspectives",Nucl.Instr. and Meth. in Phys.Res. A457 (2001) 564-570.
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Department of Solid State Engineering
Laboratory of Semiconductors

Faculty of Nuclear Sciences and Physical Engineering
Department of Solid State Engineering
Trojanova 13, 120 00 Prague 2, Czech Republic
Tel: +420 2 2435 8576, Fax: 2435 8577,
e-mail: tomiak@km1.fjfi.cvut.cz

Staff:Z.Tomiak, M.Pleninger, Č.Hlušička

Scientists in the Laboratory of Semiconductors are mainly concerned with the development of semiconductor detectors of ionizing radiation for current dosimetric practice. Work continues on the development of special detectors for medical purposes, detectors for environmental monitoring (ecological applications) and also on position sensitive detectors (e.g. CCD, microstrip detectors, solid state drift chambers) for subnuclear physics.
The problems of origin and behaviour of radiation defects in semiconductors (e.g. their temperature stability and instability) are solved.
Methods of semiconductor radiation damage measurements, e.g. DLTS, PICTS, noise measurement etc. have been developed.
The fundamental difference between metals and semiconductors can be described in terms of the energy band theory. Semiconductors have anienergy gap while metals have not such gap. Semiconductor devices are widely used. Transistors, diodes, integrated circuits, memories an so on are exceedingly common.
The Laboratory of Semiconductors in concerned with the evaluation and characterization of a material includes physical properties such as mobility, life time, and conductivity. Electrical properties are especially important because these are the final criteria by which the crystal or epitaxial layer will be judged.
Scientists in the laboratory are also concerned with the development of semiconductor detectors, based on Si, GaAs and InP, of ionizing radiation for current dosimetric practice. Work continues on the development of special detectors for medical purposes, detector for enviromental monitoring and also on position sensitive detectors for subnuclear physics.
One problem connected to the use of semiconductor detector devices is the fact that they are relatively sensitive to radiation damage. The aims of the work in our laboratory is to investigate the problems of origin and behaviour of such defects in semiconductor devices.

Projects supported by grants:
Tomiak,Z.: "GaAs Detectors", IG CTU, 1993
Tomiak,Z.: "Diagnostics of Semiinsulating GaAs" GaAs", IG CTU, 1995
Tomiak,Z.: "Introduction of the New Semiconductor Technology Methods into Curriculum" 2000

List of Selected Publications and Conference Contributions:
Tomiak,Z., Sopko,B., Mácha,I., Frank,H.: GaAS Particle and Gamma Ray Detectors, Workshop 1994, Praha 1994
Pospíšil,S., Tomiak,Z. and others: Semiconductor Detectors for Nuclear Instrumentation, Workshop 1994, Praha 1994
Tomiak,Z., Sopko,B., Mácha,I.: Bulk GaAs Radiation Detectors. Workshop 1995, Praha, January 1995, Part I.
Wilhelm,I., Doležal,Z., Kubašta,J., Pospíšil,S., Sopko,B., Tomiak,Z.: Investigation of GaAs Radiation Detectors. Workshop 1995, Praha, January 1995, Part I.
Sopko,B., Mácha,I., Tomiak,Z., Novák,R., Nováková,D., Pavel,J.: Coordinate Detectors of Elementary Particles. Workshop 1995, Praha, January 1995, Part I.
Tomiak,Z., Mácha,I., Pospíšil,S., Sopko,B.: Diagnostics of Semiinsulating GaAs. Workshop 1996, Brno, January 1996.

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Laboratory of Optical Spectroscopy of Solids

Faculty of Nuclear Sciences and Physical Engineering
Department of Solid State Engineering
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel +420 2 2191 2417, Fax 2191 2407,
email: bryknar@troja.fjfi.cvut.cz

Staff: Z. Bryknar, Z. Potůček, P. Jiroušek
PhD students: J. Přidal, J. Šonský, R. Kravets, D. Morkes, J. Pokorný, A. Deineka

Research activities in the Laboratory of optical spectroscopy concern to optical diagnostics of bulk and thin film dielectric materials. Crystalline and ceramic materials under interest are suitable, e.g., to application in opto-electronics and fabrication of lasers and detectors of the electromagnetic radiation. The aim of our research is to elucidate the electronic structure, formation, and properties of point defects and impurity centres in materials studied. The results are used for optimisation of crystal growth, ceramic and thin film preparation, and for checking of materials on content of some impurities.
We have been investigated for example the following materials: mercurous halides, alumino-phosphate glasses with Mn, CaWO4, pure and doped incipient ferroelectrics such as KTaO3, SrTiO3 with Cr, Li, Cu, Mn and PLZT ceramics.
Sophisticated experimental arrangements for measurement of luminescence properties of solids have been set up and equipped with the detectors suitable for detection of extremely low light intensities in the 300-4000 nm spectral region. Fully computer-checked arrangements make possible to measure emission spectra of photoluminescence, thermoluminescence, radioluminescence and X-ray excited luminescence, excitation spectra of photoluminescence, and optical absorption of materials.
Helium-cooled optical cryostats enable to perform the experiments at temperatures from 4.2 to 450 K. The group has active scientific contacts with the Fritz-Haber-Institute of the Max-Planck-Society in Berlin, the Technical University of Berlin, University of Giessen and with many laboratories of the Academy of Sciences of the Czech Republic.

Projects supported by grants:
Bryknar, Z. "Spectroscopy and novel phenomena in complex-doped perovskite-like materials", GA CR 202/00/1425.
Bryknar, Z. "Optical spectroscopy of selected dielectric crystals", University Development Foundation project No. 1924/2001.
Vratislav, S. "Diagnostics of materials", Research plan No. J04/98-210000021.
Vrbová, M. "Laser systems and their applications", Research plan No. J04/98-210000022.

List of Selected Publications and Conference Contributions
Bryknar, Z. - Koňáková, A. - Grasser, R. - Scharmann, A. - Himam, M. I. Near Infra-Red Luminescence of Hg2Cl2. In phys. stat. sol. (b) 1994 vol. 183, p. 321-333.
Trepakov, V.A. - Dimza, V. - Jastrabík, L. - Bryknar, Z. Luminescence and Optical Absorption in Nominally Pure and Cr-Doped PLZT Ceramics. In phys. stat. sol. (b) 1994 vol. 183, p. 299-307. Bryknar, Z. - Schulz, H.-J. - Peka, P - Koňáková, A. - Král, J. Luminescence of Defect Centers in Hg2Cl2. In Rad. Effects and Def. in Solids 1995 vol. 134, p. 447-451.
Bryknar, Z. - Dimza, V. - Jastrabík, L. - Savinov, A. - Soukup, L. - Trepakov, V. A. Optical Spectra of PLZT Ferroelectric Ceramics. In Proceed. 4th Int. Conf. Electronic Ceramics & Applic. 5-7 September, 1994 Aachen, Germany, ed. R.Wasser, Verlag der Augustinus Buchhandlung 1994. p. 431-434. (ELECTROCERAMICS IV, ISBN 3-86073-287-0).
Trepakov, V., A. - Vikhnin, V. - Shaplygina, T. - Bryknar, Z. - Potůček, Z. - Savinov M. - Smutný, F. - Jastrabík, L. - Jelínek, M. - Trtík, V. Luminescence and Possible Phase Transformations of Cr-Doped Sr0.998Ca0.002TiO3 Thin Films Deposited by the Excimer Laser Ablation Method. In Ferroelectrics 1996 vol. 184, p 361-369.
Bryknar, Z. - Peka, P. - Potůček, Z. - Schulz, H.-J. Infra-Red Luminescence of Mercurous Chloride Crystals. In Optical Materials 1996 vol. 6, p. 161-169.
Bryknar, Z. - Bykov, I. P. - Glinchuk, M. D. - Laguta, V., V. - Maximenko, Y. L. - Potůček, Z. - Jastrabík, L. - Schulz, H.-J. Investigation of Copper-Doped PLZT Electro-Optic Ceramics by the ESR - NMR - and Optical Spectroscopy. In Proc. 5th Int. Conf. on Electronic Ceramics and Applications, 2-4 September, 1996 Aveiro, Portugal, ed. J. L. Baptista, TIPAVE, Industrias Graficas de Aveiro, Aveiro 1996. p. 229-232. (ELECTROCERAMICS V, ISBN 972-8283-17-2).
Bryknar, Z. - Grasser, R. - Potůček, Z. - Scharmann, A. Near Infra-Red Luminescence of Undoped CaWO4 Crystals. In J. Luminescence1997 vol. 72-74, p. 643-645.
Bryknar, Z. - Bykov, I. P. - Glinchuk, M. D. - Laguta, V. V. - Maximenko, Y. L. - Potůček, Z. - Jastrabík, L. - Schulz, H.-J. ESR and Optical Spectroscopy of Copper-Doped PLZT Electro-Optic Ceramics. In Appl. Phys. 1998 vol. A 66, p. 555-559.
Bryknar, Z. - Potůček, Z. - Schulz, H.-J. - Bykov, I. P. - Glinchuk, M. D. - Laguta V. V. ESR and Luminescence Spectroscopy of KTaO3 Crystals. In J. Korean Phys. Soc. 1998 vol. 32, p. 684-686. Bryknar, Z. - Potůček, Z. - Schulz, H.-J. Luminescence Spectroscopy of Iron-Doped KTaO3 Crystals. In Radiation Effects & Defects in Solids 1999 vol. 149, p. 51-54.
Cerný, F. - Gurovic, J. - Smolik, J. - Macl, J. - Bryknar, Z. - Hnatowitz, V. Properties of DLC and CNx PECVD Coatings. In Proceedings of Thin Films, 1999 Cancun, Mexico, eds. M. A Melendes-Lira and M. L. Lopes, Superficies y vacio 1999 vol. 9, p. 128-130.
Bryknar, Z. - Potůček, Z. - Trepakov, V. - Jastrabík, L. Luminescence spectroscopy of SrTiO3:Mn4+. In J. Luminescence 2000 vol. 87-89, p. 605-607.

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Structure and Texture Analysis by Neutron Diffraction

Faculty of Nuclear Sciences and Physical Engineering
Department of Solid State Engineering
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2380, Fax: 2191 2407,
email: vratisla@troja.fjfi.cvut.cz

Staff: S.Vratislav, M.Dlouhá, J.Marek, L. Kalvoda
PhD students: S.V. Tikhomirov, K.Černá, A.Lančok

Neutron powder and single-crystal neutron diffraction have been developed into an important crystallographic tool in both basic and applied research. Applications to condensed matter cover the range from location of light atoms and cation distributions to magnetic structures and phase transitions. We have investigated some promising materials, e.g. zeolites (types Na-Y,Na,H-Y, kaersutite), ionic conductors (Cs(H,D)SO4, Rb3H(SeO4)2), hexaferrites (BaFe12O19, BaTi2Co2Fe8O19), high temperature superconductors (types: YBa2Cu3O7, Bi2(Sr,Ca)3Cu2O8+g - modulated structure) and Pr1-xAxMnO3 (A=Ca2+,Sr2+,Ba2+, K+) perovskites.
Our group cooperates with many laboratories of the Czech Academy of Sciences, and with the Laboratory of Neutron Physics of JINR, Dubna. Recently we began scientific contacts with ILL Grenoble , the Institute of Energy, Kjeller, Norway and with Dept. Inorganic Chemistry of University in Barcelona, Spain.
Experimental equipment: The difractometer KSN-2 is used for powder structure investigations and for the quantitative texture analysis. It is equipped with a single BF3 detector, and installation of a one dimensional position sensitive detector ORDELA 1250N is planned. The usable 2 range is 20 950 with the d-resolution value of 7.5 10-3 at the minimum. A choice of the wavelength between 0.9 1.6A is achieved by three monochromators (Zn(002), Cu(200) and Cu(111)) and by the continuous change of the take-of-angles. Sample and detector positions are automatically controlled by the DN-505-PC unit. The closed cycle refrigerator system mod. CP-62-ST/1 with a new vacuum oven from Janis Research Co. makes it possible to control sample temperature from 8 K to 1000 K. The texture goniometer TG-1 is available.

Projects supported by grants:
Vratislav, S.:"Center for Fundamental and Applied Neutron Research",GA CR 202-97-K038
Vratislav, S.:"Neutron diffraction and 13C MAS NMR studies on the LSX type zeolite, GA CR: 202/00/1427
Vratislav, S.:"Polymeric optically active planar waveguides: chirality, microstructure, technology", GA CR: 106/00/1426
Vratislav, S.:"Investigation of the atomic structure of new materials by means of neutron diffraction", JINR No: 07-04-1031-99/03

List of Selected Publications and Conference Contributions:
DLOUHÁ, M.- VRATISLAV, S.- Jirak, Z.: "Neutron Diffraction Analysis of BaCuO2, In: Proceedings of the Fifteenth European Crystallographic Meeting, Dresden, 28 August - 2 September 1994, p.637, ISBN 3-486-64246-4.
VRATISLAV,S.- DLOUHÁ, M.: "Texture Analysis of Zircaloy-4 Tubes by Neutron Diffraction", In: Proc. of the Int. Conf. Mathematical Methods of Texture Analysis, Dubna, Russia, 21-24 March 1995, p. 48.
VRATISLAV, S.- DLOUHÁ, M.- BOSÁČEK, V.: "A neutron diffraction study of chemisorbed methyl groups in the structure of Y zeolite", In: Physica B, 241-243 (1998), p. 400-402.
DLOUHÁ, M.- VRATISLAV, S.- JIRÁK, Z.: "A neutron diffraction study of the Pr3+-xA+xMn3+1-2xMn4+2xO3 (A=K, Na) perovskites", In: Physica B, 241-243( 1998), p. 424-426.
DLOUHÁ, M., et al. : "The Study of Structural Features of Phase Transitions in N(H/D)4SCN (the Monoclinic Phase) by Neutron Scattering", In: Crystallography Reports, Vol.43, No.2 (1998) p. 202-210.
MORALES, M., et al.: "Crystal structure of the mixed conductors phases, Li La Ti M O (M=Mn,Cr) with x=0.133 and y=0.20", In: J. Mater. Chem., 1998, 8, p.2691-2694.
DLOUHÁ, M., et al.: "Change Ordering and Antiferromagnetism in Pr0.8Na0.2MnO3", In: Proceeding of 19th European Crystallographic Meeting, 25th-31th August 2000, Nancy, France, p.382.
VRATISLAV,S.- DLOUHÁ, M. - BOSÁČEK, V.:" Zeolitic Catalists with Chemisorbed Methyl Groups", In: Proceeding of 19th European Crystallographic Meeting, 25th-31th August 2000, Nancy, France, p.389.
VRATISLAV,S.- DLOUHÁ,M.- BOSÁČEK,V.:" Chemisorbed Methyl Groups in NaX and NaY Types of Zeolitic Catalysts", In: Physica B 276-278 (2000) , p.929-931.

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X-ray Investigation of Residual Strains in Polycrystalline Materials

Faculty of Nuclear Sciences and Physical Engineering
Department of Solid State Engineering
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2416, Fax: 2191 2413,
email: kraus@troja.fjfi.cvut.cz

Staff: I.Kraus, N.Ganev, G.Gosmanová

X-ray non-destructive technique is used to measure macroscopic residual stresses due to the working of such materials as steel, cast iron, Al-alloys, brass, homogeneous and heterogeneous engineering ceramics. The aim of the research is to estimate the relationship between residual stresses and technologies such as welding, induction hardening, laser surface treatment, electron beam surface treatment, grinding, polishing, turning, milling, honing, shot peening, nitriding and carburising. The results obtained are mainly applicable to the machine industry. The theoretical and experimental findings have been summarized in several monographs and textbooks, e.g.: KRAUS, I. - TROFIMOV, V.V. X-ray Tensometry. 1st ed. Prague: Academia, 1988. 247pp.; KRAUS, I. X-ray Analysis of Non-uniform Stress Fields. 1st ed. Praha:Academia, 1990, 157pp. ISBN 80-200-0254-5.; KRAUS, I. Structure and Properties of Crystals. 1st ed. Praha:Academia, 1993. 247pp. ISBN 80-200-0372-X.; KRAUS, I., GANEV, N.: Diffraction Analysis of Mechanical Stresses. Textbook. 1st ed. Praha: CTU, 1995.273pp. ISBN 80-01-01366-9.; KRAUS, I. - FRANK, H. - KRATOCHVILOVÁ, I. Introduction to Solid State Physics. Textbook. 1st ed. Praha: CTU. 2001, 238pp. ISBN 80-01-02286-2. The laboratory cooperates closely with similar institutions abroad, such as Westsächsische Hochschule (FH) in Zwickau, Saint Petersburg State Technical University, Siberian Aerospace Academy in Krasnoyarsk, State University in Sofia and University of Mining and Metallurgy in Kraków, Poland. Experimental equipment:

  • Automated -goniometers SIEMENS F with CrK and CuK radiation.
  • Transportable X-ray device SIEMENS Kristalloflex 4H.
  • X-ray sources MIKROMETA II (Chirana, Czech Republic)
  • Microdensitometer ZEISS MD100 with an additional electronic sampling device.
  • Systém for image processing and analysis of diffraction patterns LUCIA-D.

Projects supported by grants:
Kraus, I.: "Optimalization of elastic constants for stress evaluation techniques", GA CR, 106/01/0958
Ganev, N.: "Strain diagnostic of surface quality of metal products", GA CR, 106/00/1477.
Vratislav, S.: "Characterization of materials", MSM 210000021.

List of Selected Publications and Conference Contributions: KRAUS, I. at al. Residual Stress Measurement in Alumina Coatings. In Materials Science and Engineering A 199, 1995, Elsevier Science. p.L15-L17. ISSN 0921-5093.
GANEV, N.-GOSMANOVÁ, G.-KRAUS, I. X-Ray Strain Analysis of Quenched and Ground Alumina Samples. In Proc. of EPDIC IV (4th European Powder Diffraction Conf. Chester, England, July 10-14,1995). Part 2. Switzerland: Transtec Publications, 1996, p.851-854. ISBN 0-87849-744-7.
KRAUS, I. at al. Residual Stresses in Plasma-Sprayed Coatings Al2O3. In Advanced Performance Materials. vol.4, no.1, January,1997, p.63-69. ISSN 0929-1881.
KRAUS, I. - GANEV, N. - GOSMANOVÁ,G. A Contribution to the Characterization of Laser-hardened Steel Surfaces. In Czechoslovac Journal of Physics. Vol.47, no.7, July 1997, p.725-730. ISSN 0011-4626.
KRAUS, I. - GANEV, N. - GOSMANOVÁ, G. Investigation of Laser-treated Surfaces. In Proceedings of SPIE. International Workshop on NTDCS, 8-12 June 1998, St.-Petersburg, Russia. Vol. 3345, 1998, p.76-78. ISSN 0277-786X. ISBN 0-8194-3161-3.
GANEV, N. et al. X-ray Investigation and Microhardness Analysis in the Surface Layer of Steels after Laser Treatment and Subsequent Grinding. In Proc. of the XV Physical Metallurgy and Materials Science Conference on Advanced Materials & Technologies, 17-21 May, 1998, Kraków-Krynica, Poland. Inzenieria materialova, vol.XIX, no.105, 1998, p.1031-1034. ISSN 0208-6247.
GANEV, N. - GOSMANOVÁ, G. - KRAUS, I. Diffraction Characteristics of Some Physical Technologies of Steel Cutting. In Proc. of the XVII Conference on Applied Crystallography, Katowice-Wisla, 31 August-4 September 1997. World Scientific Publishing, 1998. p.423-426. ISBN 981-02-3283-7.
GANEV, N. - GOSMANOVÁ, G. - KRAUS, I. Lazernyj nagrev, ostatočnye naprjaženia i mikrotverdosť. In Proc. of the 2nd International Scientific Conference Engineering and Functional Materials, Lviv 14-16 October 1997. Lviv:NTS, 1997. p.203-204.
KRAUS, I. at al. A Contribution to the residual Stress analysis of Plasma Sprayed Alumina Coatings. In Journal of Electrical Engineering. Vol.50, no.2/s, 1999, p.44-46. ISSN 1335-3632.
KRAUS, I. - GANEV, N. Industrial Applications of X-ray Diffraction. 1st ed. Frank H. Chung, Deane K. Smith. New York: Marcel Dekker, 1999. 885 pp. ISBN 0-8247-1992-1. Chapter 35, Residual stress and stress gradients, p. 793-811.
KRAUS, I. - GANEV, N. Defect and Microstructure Analysis by Diffraction. 1st ed. R.L. Snyder, J. Fiala, H.J. Bunge. New York: Oxford University Press, 1999. 785 p. ISBN 0-19-850189-7. Chapter 19, X-ray analysis of the inhomogeneous stress state, p.367-401.
GANEV, N. - KRAUS, I. Engineering Application of X-ray Stress Analysis. In Abstracts of 49th Annual Denver X-ray Conference, 31 July-4 August 2000. Denver, Colorado USA. 2000, p.183.
GOSMANOVÁ, G. - KRAUS, I. - GANEV, N. Nondestructive Testing of Oxide Layers on Zirconium Alloys. In Proceedings of SPAS. 4th International Workshop on NDTCS-2000, 12-17 June 2000, St.-Petersburg, Russia. 2000, p.G22-G24.

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Department of Physical Electronics
Ion Beam Modification and Analysis of Materials

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2216, Fax: 688 4818,
email: kral@troja.fjfi.cvut.cz

Researchers: J. Král, A. Poláčková, J. Proška, J. Voltr
Technicians: Z. Škutina, O. Turek

The activity of the group is devoted to research and development of ion beam equipment and applications such as ion beam modification of materials and ion beam analyses, and some associated problems. The group cooperates with other laboratories within the Faculty and elsewhere, and works in the field of environmental studies, archeology, mycology, research and development of new materials.

The main equipment of the Ion Beam Laboratory consists of:

  1. Medium energy (100 keV) experimental ion beam equipment with a versatile heavy ion source and mass separated ion beam. It is used for ion beam modification of materials.
  2. An equipment with proton and He-ion beam on one channel of 2.5 MV Van de Graaff accelerator (the VdG is a property of Charles University), devoted mainly to ion beam analyses. It has two target chambers, an experimental one for ion scattering measurements and another for PIXE, RBS and PESA analysis. Two-dimensional mapping of elemental composition by PIXE sub-millimetre proton probe is possible in a modified target chamber. PIXE analysis is performed either in high vacuum or in an atmosphere (N2, He) with external beam. Liquid sample analysis is possible. Another modification of the target chamber allows high energy light ion implantation, also at liquid nitrogen temperature.

Projects supported by grants:
The group participates in three research plans of Ministry of Education:
  • MŠM 210000019 - Applications of radionuclides and ionizing radiation.
    PIXE analyses of environmental samples, samples for archeological studies, and mycology.
  • MŠM 210000021 - Characterisation of Materials.
    Ion beam analyses of thin surface layers, mainly by ion scattering spectrometry, with PIXE as a complementary method.
  • MŠM 210000022 - Laser systems and their applications.
    Ion beam modification of surface layer of optical material, preparation of planar waveguide structures by ion implantation.
  • CTU300111814 - Determination of trace elements in wood-rotting fungi by the PIXE method.

List of Selected Publications and Conference Contributions:
Hrubá, I. - Král, J.: Modification of LiNbO3 Optical Properties by He+ Implantation. In: Optical Inorganic Dielectric Materials and Devices, A. Krumins, D.K. Millers, A. Sternberg, and J. Spigulis, Editors, Proc . SPIE 2967 (1997) p. 180-185.
Hříbek, P. - Král, J. - Folttiny, F.: Ion-Implanted Planar Waveguide Laser Structures.In: Workshop 98. Prague : CTU, 1998, p. 61-62.
Nejedlý, Z. - Král, J. - Voltr, J. - Krejčí, R. - Swietlicki, E. - Černý, J. - Kubík, P. - Švejda, J.: Quality Assurance of Environmental PIXE Analysis in Prague. In: Nuclear Intruments and Methods in Physics Research. 1998, vol. B 136/138, p. 981-985. ISSN 0168-583X.
Nejedlý, Z.:PIXE analysis of environmental samples, Doctoral Theses, FNSPE CTU in Prague, Prague, 1998.
Key, P. - Král, J. - Schmidt, M.: Ion Beam Analysis of Pulsed Laser Deposited Ti:Sapphire. In: Applied Surface Science. 1999, vol. 138-139, p. 503-506. ISSN 0169-4332.
Voltr, J. - Král, J. - Nejedlý, Z.: PESA as a Complementary Tool to PIXE at CTU Prague. In: Nuclear Instruments and Methods in Physics Research. 1999, vol. B 150, p. 554-558. ISSN 0168-583X.
Voltr, J. - Král, J. - Nejedlý, Z. - Šimčík, S.: Sub-milliprobe at the CTU in Prague. In: Nuclear Instruments and Methods in Physics Research. 2000, vol. B 161-163, p. 344-347. ISSN 0168-583X.

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X-ray Optics and Diagnostics

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: pina@troja.fjfi.cvut.cz

Staff: L. Pína, M. Kálal, A. Jančárek, J. Pavel
PhD students: P. Krupičková, T. Mocek, R. Mokso, D. Převorovský

Generation, interaction, imaging, spectroscopy and detection of soft X-rays are studied and applied in various projects. Experimental work is currently enhanced by research into X-ray lasers and diagnostic techniques of hot dense plasmas with high temporal, spectral and spatial resolution applicable generally to astrophysics, thermonuclear fusion, X-ray and non-linear optics. This research includes optical complex interferometry, X-ray imaging, X-ray spectrometry and X-ray detection. Several national and international R&D grants have been obtained mostly for grazing incidence X-ray optical systems and X-ray CCD detectors. Laboratory exploits equipment shared in the Prague Center of Industrial X-ray Tomography and Laser Center Prague.
The research has been linked with other laboratories, e.g. Inst. für Plasma Forschung, Stuttgart, Rutherford and Appleton Laboratory, Didcot; Medical Research Council, Cambridge; Inst. of Plasma Physics and Laser Microfusion, Warsaw, Smithsonian Astrophysical Observatory, USA, and University Graz.

Projects supported by grants:

  • Vrbová, M.: X-Ray Laser Pumped by Electric Discharge. IG ČVUT 309811404
  • Kálal, M.: A high efficiency soft X-ray laser in the 25-30 nm spectral region, using optimized prepulsed pumping conditions. Grant of GA CR 202/97/0918
  • Pína, L.: A Novel Approach to X-Ray Fluorescence Micro-Analysis. Copernicus IC15-CT97-707
  • Pína, L.: Innovative Wide-Field X-Ray Optics for Satellite Astronomy. GA CR 102/99/1546

List of Selected Publications and Conference Contributions:
Yuelin Li, Crespo Lopez-Urrutia, J.R., Tsakiris, G.D., Sigel, R., Volk, R., Pina, L.: Comparison of the Spectral Response of a Thinned, Backside Illuminated CCD with a CsI Coated MCP System and Kodak 101 Film, 4th Int. Colloquium on X-ray Lasers, Williamsburg, Virginia, May 16-20, 1994.
Hudec R., Inneman A., Pina L., Gorenstein P.: Replicated Reflectors for Wide-Field X-ray Imaging Telescopes. Proc. of the Workshop on Imaging in High Energy Astrophysics, Eds. L. Bassani and G. Di Cocco, Kluwer Academic Publishers, The Netherlands, 1995.
Hudec, R., Pína, L., Inneman, A., Gorenstein, P., Rezek, T.: Wide Field X-Ray Telescopes: Detecting X-Ray Transients Afterglows Related to Gamma Ray Bursts. Nuclear Physics B (Proc. Suppl.) 69/1-3 (1998) pp. 716-719.
Rus B., Holden, P.B., Mocek, T., Kálal, M., Zeitoun, P., Sebban, S., Demir, A., Jamelot, G., Králiková, B., Krása, J., Pína, L., Skála, J., Tallents, G.: Design of efficient soft X-ray laser using neonlike Fe driven by iodine laser, SPIE, Vol. 2767 (Iodine Lasers and Applications), 1996, pp. 125-132.
Mocek, T., Rus, B., Kálal, M., Zeitoun, P., Demir, A., Jamelot, G., Králiková, B., Krása, J., Pína, L., Sebban, S., Skála, J., Tallents, G.: Experimental investigation of line plasmas created by intensities 109 - 1011 Wcm-2, SPIE, Vol. 2767 (Iodine Lasers and Applications), 1996, pp. 133-141.
Rus, B., Holden, P.B., Mocek, T., Kálal, M., Zeitoun, P, Demir, A., Králiková, B., Sebban, S., Skála, J., Tallents, G.: A high efficiency soft X-ray laser in the 25-30 nm spectral region, NATO ASI Series 3, Vol. 7 (High Power Lasers - Science and Technology), Kluwer Ac. Publishers, Dordrecht, 1996, pp. 199-216.
Rus, B., Zeitoun, P., Mocek, T., Sebban, S., Kálal, M., Demir, A., Jamelot, G., Klisnick, A., Tallents, G.: Investigation of prepulse plasmas for collisional excitation X-ray lasers, Inst. Phys. Conf. Ser., No 151, Section 11 (X-ray lasers), Lund, 1996, pp. 394-398.
Rus, B., Zeitoun, P., Mocek, T., Sebban, S., Kálal, M., Demir, A., Jamelot, G., Klisnick, A., Králiková, B., Skála, J., Tallents, G.J.: Investigation of Zn and Cu prepulse plasmas relevant to collisional excitation x-ray lasers, Physical Review A, Vol. 56, 1997, pp. 4229-4241.
Kálal, M., Rus, B., Zeitoun, P., Mocek, T., Seban, S., Demir, A., Králiková, B., Skála, J., Jamelot, G., Tallents, G.: Studies of Phenomena Involved in the Prepulse Pumping of Collisional X-ray Lasers by Optical Interferometry, Advances in Laser Interaction and Inertial Fusion, Eds. G. Velarde, J.M. Martinez-Val, E. Minguez, J.M. Perlado, , World Publishing Co., Singapore, 1997, pp. 487-490.
Hudec R., Inneman A., Pina L., Gorenstein P. A New X-Ray Telescope for Monitoring the X-ray Afterglows of GRBs. In: Gamma-Ray Bursts (Ed. Kippen, R.M., Malozzi, R. S. and Fishman, G. J.), American Institute of Physics 2000, 701-705.
Hudec R., Pina L. and Inneman A., Gorenstein P., Melich Z., LE X-Ray telescopes- Innovative Experiment to Monitor X-ray Afterglows of GRBs. Nuclear Physics B. (Proc. Suppl.) 80 (2000), 06-15.
Pina L., Inneman A.., Hudec R.,. .Progress in the Lobster Eye X-ray Optics Development. Proceedings of the International Congress on Optical Science, SPIE, San Diego, USA, August 2000.

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Diffractive and Nonlinear Optics

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2284, Fax: 688 4818,
email: fiala@troja.fjfi.cvut.cz

Staff: P. Fiala, P. Hříbek, I. Richter
PhD students: R. Baše, J. Kratochvil, M. Květoňová, M. Škereň

The activities of the group cover: diffraction processes modelling in static and dynamic grating structures, diffractive optical elements design for optical imaging, computer-generated diffractive elements, high spatial frequency and artificially birefringent structures, resonant processes in diffraction gratings; study of photorefractive nonlinear optical material properties, and research of new optical phenomena in these materials; research and development of passive and active waveguides, ion-implanted waveguide lasers, selectively pumped solid state lasers; medical applications of lasers (laser lithotripsy, noninvasive photodynamic therapy); electronics for optical devices development (hardware and software).
National group cooperation: Academy of Sciences of the Czech Republic, Institute of Radio Engineering and Electronics; Academy of Sciences of the Czech Republic, Physical Institute; Czech Technical University in Prague, Faculty of Electrical Engineering; Technical University in Brno, Institute of Physical Engineering.
Past and present international group cooperation: University of Oxford - Department of Engineering Science, England; University of California at San Diego, Department of Electrical and Computer Engineering, USA; University of Southampton - Optoelectronics Research Centre, Great Britain; Technical University Darmstadt - Institute of Applied Physics, Germany.

Projects supported by grants:

  • FB-C3/58 - Fiala, P. Diffractive optics technology center (Ministry of Industry and Trade)
  • S2065014 - Fiala, P. Submicrometer relief diffractive structures made by electron-beam lithography (Grant agency of the Academy of sciences of the Czech republic)
  • GA102/99/1391 - Hříbek, P. New technologies for dielectric lasers and amplifiers preparation (Grant agency of the Czech republic)
  • 300010804 - Richter, I. Methods of analysis of optical diffractive structures (Grant agency of the Czech technical university in Prague)

List of Selected Publications and Conference Contributions:
Richter, I. - Fiala, P.: Mechanisms Connected with a New Diffraction Order Formation in Surface-Relief Gratings. In: OPTIK - International Journal for Light and Electron Optics. 2000, vol. 111, no. 6, p. 237-245. ISSN 0030-4026.
Škereň, M. - Richter, I. - Fiala, P.: Design of Binary Phase-Only Diffractive Optical Elements for Laser Beam Shaping. In: SPIE Proceedings, Vol. 4095: Laser beam Shaping. Baltimore : SPIE, 2000, p. 154-164. ISBN 0-8194-3740-9.
Richter, I. - Fiala, P.: Threshold and Resonance Effects in Diffraction Gratings. In: SPIE Proceedings, Vol. 4095: Laser beam Shaping. Baltimore : SPIE, 2000, p.58-68. ISBN 0-8194-3740-9.
Richter, I. - Ryzí, Z. - Fiala, P.: Physical Interpretation of Diffraction Processes in Surface-relief Gratings. In: EOS Topical Meetings Digest Series Vol. 22 - Diffractive optics. 1999, vol. 22, no. 1, p. 113. ISSN 1167-5357.
Richter, I. - Ryzí, Z. - Fiala, P.: Analysis of Binary Diffraction Gratings: Comparison of Different Approaches. In: Journal of Modern Optics. 1998, vol. 45, no. 7, p. 1335-1355. ISSN 0950-0340.
Richter, I. - Ryzi, Z. - Fiala, P.: Analysis of Diffraction Gratings: Comparison between Different Approaches. In: EOS Topical Meetings Digest Series Vol. 12 - Diffractive optics. 1997, p. 140-141.
Pánek, J. - Hříbek, P. - Kubeček, V. - Jelínková, H. - Zavoral, M.: Cr:Tm:Ho:YAG (2.1um) and Nd:YAG (1.444um) Pulsed-Laser Lithotripsy of Bile Duct Stones. In: Czechoslovak Journal of Physics. 2000, vol. 50, no. 9, p. 1027-1030. ISSN 0011-4626.
Kaczmarek, M. - Hříbek, P. - Eason, R.: Near-Infrared Incoherent Coupling and Photorefractive Response Time of 'Blue' Rh:BaTiO3 In: Optics Commun. 1997, p. 277-282. ISSN 0030-4018.
Kaczmarek, M. - Hříbek, P. - Eason, R.: Characterization of photorefractive properties of `blue' Rh:BaTiO3 via nonlinear wave mixing. In: Journal of Modern Optics 1996, p. 1817-27.

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Laser Technology

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2247, Fax: 688 4818,
email: jancarek@troja.fjfi.cvut.cz

Staff: A. Jančárek, P. Gavrilov, M.Vrbová, R. Tomášek
PhD students: L. Poušek
5th year students: J. Dvořák, G. Kuhnová, T. Kocourek

Research activity covers two areas both utilizing earlier gas laser studies and developments. The results are applied in biomedicine and laser technology as laser marking, micromachining of plastics, wood, ceramics, glass, titan, paper, alumina etc.
Interaction of laser radiation with tissue is studied. This biomedical research includes influence of laser radiation on the urocanic acid and its role in mechanism of immunosuppressive effects. Experiments are carried out in collaboration with Department of Ophthalmology of the Charles University, Prague and Institute of Molecular Genetics, Academy of Sciences.
Collaboration with Center of Biomedical Engineering, CTU and Faculty of Mechanical Engineering on laser thermokeratoplasty is starting and collaboration with the Department of Ophthalmology of Charles University, Prague is going on.
Laboratory exploits equipment shared in the Prague Centre of Industrial X-ray Tomography and Laser Center Prague.
The group is in contact with the University of Göttingen, University of Hull and Saratov State University;

Projects supported by grants:

  1. Jančárek, A: Laser Technology Center. Ministry of Industry and Trade grant FB-C2/016/99

List of Selected Publications and Conference Contributions:
P. Přech, L. Poušek, A. Jančárek, P. Gavrilov: Absorption Measurement in Human Blood Components Using N2 laser, In: Workshop 97. Part 3. Prague: CTU, 1997, 1103-4
P. Přech, A. Jančárek, P. Gavrilov, and P.H. Key.: Temperature Changes Induced by Low-Energy CO2 Laser Irradiation in Enamel, Laser Physics, 8 (1998), 336-9
M. Filipec, E. Letko, Z. Hašková, D. Jeníčková, P. Holler, A. Jančárek, V. Holáň: The effect of urocanic acid on graft rejection in an experimental model of orthotopic corneal transplation in rabbits, Graefes Arch Clin Exp Ophthalmol, 236:1 (1998), 65-8
V. Holáň, L. Kuffová, A. Zajícová, M. Krulová, M. Filipec, P. Holler, A. Jančárek: Urocanic acid enhances IL-10 production in activated CD4+ T cells, Journal of Immunology, 161 (1998), 3237-41
A. Jančárek, P. Gavrilov, P. Přech, M. Vrbová, M. Chalupa, J. Pospíšil: Laser cutting and engraving device Archa, In: Transfer 98, 2.část, Praha, CTU, 1998, 239

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Molecular Electronics and Spectroscopy

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: fidler@dec1.fjfi.cvut.cz

Researchers: V. Fidler, P. Kapusta, M. Hof
PhD students: P. Špulák
External collaborators: M. Nepraš, S. Nešpůrek, V. Čápek

Our experimental research is devoted to the photophysics of new molecules and organised molecular systems exhibiting properties that are potentially important for molecular (opto)electronics. A broad scope of compounds is examined: relatively simple organic molecules (e.g. new fluorescent labels, fluorophores with extreme dipole moment change on excitation, etc.), multichromophoric molecular systems, and complex biomacromolecules, and new types of polymers. Syntheses of new compounds are being carried out in collaborating laboratories (M. Nepraš, University Pardubice, CR, mainly).
Experimental investigations utilise a broad range of optical spectroscopy: steady state absorption and fluorescence, nanosecond to femtosecond fluorescence lifetimes and anisotropy measurements, time-resolved non-linear techniques. Experiments are performed at home except for some ultrafast (fs) measurements that are jointly performed in collaborating laboratories abroad.
Kinetics of primary photophysical processes is spectroscopically followed in a real time. We apply various methods for re-convolution and multiparameter fitting of experimental data, as well as computer simulations of the relaxation processes in question. Quantum chemical calculations of relevant molecular structures are carried out in collaboration with other quantum chemists and physicists (Charles University, Prague).
Special attention is currently devoted to intra-molecular electronic excitation energy transfer, electron density redistribution, excitonic interactions, related molecular dynamics, and to the relationship of those processes with molecular micro-surrounding. Connection of such fast processes with non-linear optical and/or electrical molecular properties will be investigated.
Our group has close scientific contacts and collaborations with partner laboratories abroad, as in Himeji Institute of Technology in Japan, at University of Göttingen and Max-Planck Institute in Göttingen , Germany; and Brown University, USA.

Projects supported by grants:
  1. Excitonic Interactions in Molecular Systems: Dynamics and Mechanisms of Excitation Energy Transfer. GA CR No. 202/98/0566
  2. Molecular Science: Processes of Electron and Proton Transfer and Energy Exchange in the Gaseous and Condensed Phase, B: Energy Transfer and Excitonic Interactions. MŠMT ČR, Kontakt ME296 (1998)
  3. Solvent Relaxation in Bio-membranes. GA CR No. 203/99/0845
  4. Laser Systems, CTU research plan No. MSM 210000022

List of Selected Publications and Conference Contributions:
Bradforth, S., Jimenez, R., Fidler, V., Fleming, G., Nagarajan, S., Norris, J., van Mourik, F., van Grondelle, R.: Ultrafast Energy Transfer in the Core Light Harvesting Complex of the Photosynthetic Bacterium Rhodobacter Sphaeroides Observed by Fluorescence Upconversion. In: Ultrafast Phenomena IX., Springer-Verlag, 1994, p. 441.
Vajda, S., Jimenez, R., Castner, Jr., E.W., Rosenthal, S.J., Fidler, V., Fleming, G.R.: Femtosecond through Nanosecond Time Scale Solvation Dynamics in Pure Water and Inside the g-Cyclodextrin Cavity. J.Chem.Soc. Faraday Trans. 91 1994, pp. 867-873
Zhang, S.-L., Lang, M. J., Goodman, S., Durnell, C., Fidler, V. , Fleming, G. R., Yang, N. C.,: Donor-Acceptor Interaction and Photochemistry of Polymethylene-Linked Bichromophores in Solution, J. Am. Chem. Soc. 118 (1996), pp. 9042-9051
Hof, M., Vajda, Š., Fidler, V., Karpenko, V.,: Picosecond Tryptophan Fluorescence of Human Blood Serum Orosomucoid. Collect. Czech. Chem. Commun., 61 (1996), pp. 808-818
Hof, M., Fleming, G.R., Fidler, V.: Time-Resolved Fluorescence Study of a Calcium Induced Conformational Change in Prothrombin Fragment I. Proteins: Structure, Function and Genetics, 24, 1996, pp. 485-494
Hutterer, R., Schneider, F.W., Fidler, V., Grell, E., Hof, M.: Time-evolved Emission Spectra of Prodan and Patman in Large Unilamellar Vesicle. J. Fluor., 7(1), 1997, pp. 161-163. Nepraš, M., Machalický, O., Šeps, M., Hrdina, R., Kapusta, P., Fidler, V.: Structure and Properties of Fluorescent Reactive Dyes: Photophysics of Some Benzanthrone Derivatives. Dyes and Pigments 35, 1997, pp. 31-44
Fidler, V., Kapusta, P., Nepraš, M., Schroeder, J., Rubtsov, I.V., Yoshihara, K.: Ultrafast Electronic Energy Flow in a Bichromophoric Molecule. Collect. Czech Chem. Commun. 63, 1998, pp. 1460-1472. Kapusta, P., Fidler, V., Nepraš, M., Blachut, T., Šeps, M.: 1-(Dichloro-1,3,5-Triazinyl)-Pyrene - A New Polarity Probe. in: Jan Slavik, ed., Fluorescence Microscopy and Fluorescence Probes Vol. 2, Plenum Press, New York 1998, pp. 133-139.
Kapusta, P., Fidler, V., Nepraš, M., Šoustek, P., and Hof, M.;: Reactive fluorescent N-trazinyl-1-aminopyrene derivatives, in: Kotyk, A., Ed.: Fluorescence Microscopy and Fluorescent Probes 3, Espero Publishing, Czech Republic, (1999) pp. 145-151 Nepraš, M., Urbanec, J., Kapusta P., and Fidler, V.: Dvojí fluorescence u některých derivátů 3-aminobenzanthronu,Chem. Listy, 94 (2000) 795-796 Fidler, V., Kapusta, P., Nepraš, M., Schroeder, J., Rubtsov, I., V., and Yoshihara, K.: Femtosecond Fluorescence Anisotropy Kinetics as a Signature of Ultrafast Electronic Energy Transfer in Bichromophoric Molecules, Accepted to Zeitschrift für Physikalische Chemie, to be published in Apr./May (2001)

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Satellite Laser Ranging

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: novotny@troja.fjfi.cvut.cz

Staff: A. Novotný, J. Blažej, M. Čech, K. Hamal, H. Jelínková, I. Procházka
PhD students: J. Přidal, J. Šonský, R. Kravets, D. Morkes, J. Pokorný, A. Deineka

The group headed by K. Hamal was formed in 1972 to support the satellite laser ranging activity. Within the Interkosmos group it significantly contributed to the formation of the global Satellite Laser Ranging Network. Currently, the group operates the satellite laser station (SLR) in Helwan - Egypt. The SLR station at Helwan was set up under a joint program with NRIAG - Egypt, CTU FNSPE - Czech, Astronomical Council - Russia and SAO - USA. The ranging precision has been continually improved from the original value of several meters down to a centimeter level in the nineties. The Helwan site is an important station in the SLR network the only SLR station on the African continent with a measurement record of more than 20 years.
The Raman picoseconds laser generation and photon counting in the near infrared is investigated for eye safe laser ranging. Multiple wavelengths laser ranging is exploited for atmospheric studies.

  • Joint projects with National Research Institute of Astronomy and Geophysics (NRIAG), Helwan-Cairo for operation and upgrading of SLR station Helwan.
  • Participation in global scientific projects, using SLR data from more than 10 satellites.
  • SLR station in Helwan was selected in 1998 for the newly established ILRS (International Laser Radar Service) network.
  • Particular information about SLR network, technical description of SLR stations and satellites, analysis of SLR data, reports, news, etc. are available on WWW pages of the ILRS. http://ilrs.gsfc.nasa.gov.

Projects supported by grants in 2001:
NRIAG, Helwan-Cairo, Egypt; Development of the Equipments for SLR Station Helwan.

List of Selected Publications and Conference Contributions:
Procházka, I.: SPAD based SLR systems calibration scheme recommendation [Invited Lecture]. EurOpto EOS/SPIE Symposium on Remote Sensing. 1999-09-23
Procházka, I. - Novotný, A.: Ground target calibration scheme, SLR station Helwan [Invited Lecture]. EurOpto EOS/SPIE Symposium on Remote Sensing. 22.09.1999.
Čech, M. - Hamal, K. - Jelínková, H. - Novotný, A. - Procházka, I. - Helali, Y. - Tawadros, M: Upgrading of the Helwan Laser Station (1997-1998). In: Proceedings 11th International Workshop on Laser Ranging. Vol 2. Frankfurt am Main: Verlag des Bundesamtes für Kartographie und Geodasie, 1999, p. 197-200. - ISBN 3-88648-094-1
Novotný, A.: Human Factor as an Important Phenomenon of GLOBAL SLR Network. In: Proceedings 11th International Workshop on Laser Ranging. Vol 2. Frankfurt am Main: Verlag des Bundesamtes für Kartographie und Geodasie, 1999, p. 317-319. - ISBN 3-88648-094-1
Procházka, I.: Differential Satellite Laser Ranging SLR System Diagnostics Tool. In: Proceedings 11th International Workshop on laser Ranging. Vol. 2. Frankfurt am Main: Verlag des Bundesamtes fur Kartographie und Geodasie. 1999. p. 660-663. - ISBN 3-88648-094-1
Čech, M.: Laser Radar Control System. In: Proceedings of Workshop 2000. Prague : CTU, 2000, vol. A, p. 220. ISBN 80-01-02229
Novotný, A. - Čech, M. - Jelínková, H. - Hamal, K. - Procházka, I. - Helali, Y. - Khalil, K.- Tawadros, M.: Satellite Laser Ranging Station Helwan as a Part of the Global Network, International Projects in Earth Science and Astronomy. In: Proceedings of Workshop 2000. Prague : CTU, 2000, vol. A, p.196. ISBN 80-01-02229

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Information Physics

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: limpouch@lilit.fjfi.cvut.cz

Staff: J. Limpouch, L. Drška, R. Liska, M. Šiňor
PhD students: J. Kuba, V. Weinzettl, T. Dytrych
5th year students: M. Kuchařík, Z. Jeriová

The research activities in the Laboratory of Information Physics cover mainly:

  • methods of computational physics: applications of computer algebra providing support for numerical simulations and automation of programming, numerical methods for conservation laws, development of programs for high performance computing (HPC), plasma physics studies based on computer algebra and HPC
  • computational physics of high energy densities: atomic physics of hot and dense matter, numerical simulation of laser-plasma interactions (including femtosecond pulse interactions), complex models of pulsed systems with extreme parameters, nuclear processes in super-dense plasmas, atomic physics in capillary discharges
  • computer-assisted instruction and information pedagogy: methodology of the use of integrated computing systems, computer and www-based courses for information physics and physical electronics, virtual department of physical sciences The laboratory participates in joint project "Laser plasma research centre" (LN00A100), coordinated by the Institute of Physics of the Academy of Sciences. The project is supported by the Ministry of Education, Youth and Sports of the Czech Republic. The laboratory has active scientific contacts with several universities and research institutions internationally, and joint papers with colleagues from the U.S.A., Russia, France, Poland, Germany, Norway, Japan, and Australia have been published.

Projects supported by grants:

  1. Limpouch, J.: Atomic and Radiative Processes in Non-Equilibrium Laser Plasmas. Grant Agency of the Czech Republic project, 202/01/0755
  2. Liska, R.: Difference schemes for conservation laws and modelling of laser generated plasma, Grant Agency of the Czech Republic project, 201/00/0586
  3. Liska, R.: Mimetic finite difference methods for diffusion equations, Czech-German join project, CZE-00-010

List of Selected Publications and Conference Contributions:
Hong, H. - Liska, R. - Steinberg, S.: Testing stability by quantifier elimination. J. Symbolic Computation, 24, 1997, pp. 161-187.
Liska, R. - Wendroff, B.: Analysis and computation with stratified fluid models. J. Comp. Phys., 137, 1997, pp. 212-244.
Liska, R., - Wendroff, B.: Composite schemes for conservation laws. SIAM J. Numer. Anal. 1998, vol. 35, no. 6, p. 2250-2271.
Kocbach, L. - Liska, R.: Generation and verification of algorithms for symbolic-numeric processing. J. Symbolic Computation 1998, p. 367-382.
Liska, R. - Wendroff, B.: 2D shallow water equations by composite schemes. Int. J. Numer. Meth. Fluids. 1999, vol. 30, no. 4, p. 461-479.
Andreev, A. A. - Limpouch, J.: Ion acceleration in short-pulse laser-target interactions, J. Plasma Physics 62, 1999, pp. 179 - 193.
Andreev, A. A. - Limpouch, J. - Nakano, H.: Optimal enhancement of x-ray line emission from plasma by shaping of short high-intensity laser pulses, Proceedings SPIE 3934, 2000, pp. 52 - 60.
Iskakov, A. B. - Tishkin, V. F. - Lebo, I. G. - Limpouch, J. - Mašek, K. - Rohlena, K.: Two-dimensional model of thermal smoothing of laser imprint in a double-pulse plasma, Phys. Review E 61, 2000, pp. 842-847.
v Kuba, J., Klisnick, A., Ros, D., Fourcade, P., Jamelot, G., Miquel, J.-L., Blanchot, N., Wyart, J.-F.: Two color transient pumping in Ni-like silver at 13.9 and 16.1 nm, Phys. Rev. A 62, 2000, art. 043808.
Nakano, H. - Nishikawa, T. - Uesugi, N. - Limpouch, J. - Andreev, A. A.: Femtosecond laser-produced plasmas as x-ray sources, XXVI European Conference on Laser Interaction with Matter, Prague, June 12-16, 2000. Invited paper Fr/O3/1/I, Book of Abstracts, p. 122, Proceedings SPIE (in print).
Drška, L. - Limpouch, J. - Liska, R. - Šiňor, M.: Physical Engineering education supported by IT. In: PTEE 1997: First European Conference on Physics Teaching in Engineering Education, Copenhagen, 4-6 June 1997. http://www.ptee97.cph.ih.dk/
Drška, L. - Liska, R. - Šiňor, M.: Complex application of CA/ICS in high-tech engineering education. In: ACA'98: 4th IMACS Conference on Applications of Computer Algebra, Prague, 9-11 August 1998.http://www troja.fjfi.cvut.cz/~drska/edu/aca981/
Drška, L.: Net-based systems in high-tech-era learning of science and engineering. In: EUNIS'98: Congress on European Cooperation in Higher Education Information Systems, Prague, September 21-22, 1998 (Ed. I. Vrána). EUNIS-CZ, Prague 1998, pp. 93-98.>http://www troja.fjfi.cvut.cz/~drska/edu/eunis981/

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Picosecond Timing and Detector Technology

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: prochazk@troja.fjfi.cvut.cz

Staff: I. Procházka, K. Hamal, J.Blažej
PhD students: J. Přidal, J. Šonský, R. Kravets, D. Morkes, J. Pokorný, A. Deineka

The group headed by K.Hamal has been formed in seventies to support the satellite laser ranging activity. Its research and development is directed to the field of picosecond solid state photon counting, laser ranging technology and picosecond timing techniques. The ranging precision has been continually improved from the original value of several metres down to a millimetre level in the year 2000. Recently, the laser ranging system based on solid state technology and picosecond event timing technique is capable to range to ground targets with a precision of 1 millimetre and to Earth orbiting satellites at distances up to 20,000 kilometres with an overall precision of 3-10 millimetres. The solid state detection technology together with laser ranging techniques have been exploited in developing the space-born lidar for the Mars planet scientific mission NASA Mars Polar Lander ‘98. The Compact Lidar for ecology and atmospheric monitoring and the Photon counting based dust meter are another outputs of the space technology applications. The Raman picosecond laser generation and photon counting in the near infrared is investigated for eyesafe laser ranging. In addition, the near infrared picosecond photon counting detectors are under development for fibre optics applications, quantum cryptography and sensors. Multiple wavelengths laser ranging is exploited for atmospheric studies. The picosecond timing techniques are developed and applied in laser ranging and detectors diagnostics.
The group is involved in numerous international projects and experiments in cooperation with universities and research institutes in Austria, China, Germany, Egypt (satellite laser ranging), Russia and the United States (space projects) and Japan (eye safe laser ranging).

Projects supported by grants:

  • Procházka, I.: Solid State Photon Counter for Space and Remote Sensing Applications. GA CR 102/99/0541
  • Hamal K.: Photon counting detector for the near infrared region, GACR 102/00/0820
  • Prochazka I., Haasz V.: Precision optical measurements, Research Project MSM 210000015.1
  • Vrbova M.: Laser systems and their applications, Research Project MSM 210000022

List of Selected Publications and Conference Contributions:
Greene, B., Kunimori, H., Hamal, K., Prochazka, I.: Atmospheric dispersion monitoring using 0.53 um and 1.54 um satellite laser ranging, Technical Digest Cleo/Europe '96, Optical Soc.of America, IEEE Catalog Number 96TH8161, p. 221.
Prochazka, I., Hamal, K., Kunimori, H., Greene, B.: Large aperture Germanium detector for picosecond photon counting in the 0.5 to 1.6 um range, Optics Letters, Vol.21 (17), 1 September 1996, pp. 1375-1377
Kirchner, G., Koidl, F., Blazej, J., Hamal, K.,Prochazka, I.: Time Walk Compensated SPAD: Multiple Photon Versus Single Photon Operation, Proceedings of the European Symposium on Aerospace Remote Sensing, published in SPIE 3218-07, 1997
Prochazka, I., Hamal, K., Blazej, J., Kirchner, G., Koidl, F.: Extended Dynamical Range Solid State Photon Counter, 1998 SPIE (3287 41) S9
Procházka, I.: Optical Methods for Atmospheric Monitoring and Environmental Sensing. In: CTU Reports. Prague: CTU. 1999. p. 3-131. - ISBN 80-01-01986-1
Procházka, I. - Hamal, K. - Pershin, S.: SPAD Detector for Laser Ranging on mars Surface. In: Proceedings 11th International Workshop on laser Ranging. Vol. 2. Frankfurt am Main: Verlag des Bundesamtes fur Kartographie und Geodasie. 1999. p. 421-425. - ISBN 3-88648-094-1
Hamal, K. - Procházka, I. - Blažej, J.: Pico event timer based portable calibration standard for satellite laser ranging. [Invited Lecture]. EurOpto. 1999-06-16.
Hamal, K. - Procházka, I. - Blažej, J.: Contribution of the picosecond event timer to the satellite laser station performance improvement. In: SPIE Proceedings, Vol. 3865. Washington: SPIE. 1999. p. 5. - ISBN 0- 8194-3460-4
Hamal, K. - Procházka, I. - Blažej, J. - Eslerová, I. - Sopko, B. - Pasta, A.: Photon counting based dust monitor. In: SPIE Proceedings, Vol. 3707. Washington: SPIE. 1999. p.599-603. - ISBN 0-8194-3181-8
Kunimori H., Green B., Hamal K., Procházka I., Centimetre Precision Eye-Safe Satellite Laser Ranging Using a Raman Shifted Nd:YAG Laser and Germanium Photon Counter , In : IoP, Optics A: Pure and Applied Optics. 2000, Vol. 2, No. 1, p. 1-4. ISSN 1464-4258

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Short Pulse Solid State Lasers

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: kubecek@troja.fjfi.cvut.cz

Staff: V. Kubeček, H. Jelínková
PhD students: A. Dombrovský

Ultrashort laser pulses have gained enormous importance for applications in remote sensing, optical communications, spectroscopy, medicine, laser technologies and many other as for example laser induced lightning. Actively-passively mode-locked flashlamp pumped Nd:YAG lasers are known to be most reliable high power sources for picosecond pulses in the near infrared and visible spectral region. The application of second harmonic pulse compression to the output of a such laser, stabilized by passive negative feedback extends the range to femtosecond region. The main drawback of this laser system are liquid saturable absorbers used for mode-locking and Q-switching which are carcinogenic organic dyes decomposing by UV light from flashlamps . Replacement of this dye by a solid-state mode-locker is very desirable. Recently developed multiple-quantum well (MQW) solid state saturable absorbers and nonlinear mirrors with frequency doubling crystals are promising alternative.
The aim of the current research is development of solid state saturable absorbers for flashlamp pumped neodymium doped lasers. The semiconductor structures with multiple quantum wells grown at University of New Mexico (USA) and another techniques as nonlinear mirrors with frequency doubling crystals are investigated and optimized for mode-locking of a pulsed Nd:YAG laser and Nd:YAP lasers. New elements will be used in compact picosecond Nd:YAG laser system for laser induced lightning which is under development at UNM as well as in picosecond Nd:YAG laser for ophtalmology developed at CTU Prague and can be attractive for replacement of liquid dyes in all similar laser systems. There is also recently extended activity towards diode pumped solid state lasers which are very perspective for future use.
All mentioned research is carried out in collaboration with universities and research institutions in USA (University of New Mexico), France (University of Limoges), Italy (University of Pavia), Russia (Institute of Physics, Academy of Sciences).

Projects supported by grants:

  1. KubečekV.: New Nonlinear Elements for Mode-locking of Lasers, GACR 102-00-1278
  2. KubečekV.: Research and Development of Diode Pumped Solid State Lasers for Gyro and other Sensors, MSMT, Kontakt ME 384
  3. Vrbová M.: Laser Systems and Their Applications, CTU Research Plan no. 210000022

List of Selected Publications and Conference Contributions:
Couderc, V., Barthelemy, A., Kubeček, V., Jelínková, H.: Self-mode locked operation of a CW Nd:YAG laser using second harmonic nonlinear mirror, "Advanced materials for optics and optoelectronics", SPIE Vol. 2777, ed.V.I.Pustovoy, 1996, p.216.
Agnesi, A., Pennacchio, C., Reali, G.C., Kubeček, V.: High – power diode-pumped picosecond Nd:YVO laser. Opt.Lett. 22, 1997, p. 1645.
Biegert, J., Kubeček, V., Diels, J.-C.: Second harmonic pulse compression. XIth International Conference on Ultrafast Phenomena, Garmisch Partenkirchen 1998, Paper MoP6, Book of abstracts pp. 54-55
Biegert, J. - Kubeček, V. - Diels, J.: Pulse Compression. In: Wiley Encyclopedia of Electrical and Electronics Engineering. Chichester : John Wiley & Sons, 1999, vol. 17, p. 446-454. ISBN 0-471-13946-7..
Kubeček, V. - Couderc, V. - Bourliaguet, B. - Loradour, F. - Barthelemy, A.: 4-W and 23-ps Pulses from a Lamp Pumped Nd:YAG Laser Passively Mode-locked by Polarization Switching in KPT Crystal. In: Applied Physics B: Lasers and Optics. 1999, vol. 69, no. 1, p. 99-102. ISSN 0946-2171.
Kubeček, V. - Dostál, J. - Dombrovský, A.: Cr:YAG jako perspektivní zdroj pro optické komunikace v oblasti 1.5 um. In: Sborník konference Optické komunikace O.K. '99. Praha : TECH-MARKET, 1999, s. 164-168. ISBN 00086114-30-9.
Biegert, J. - Kubeček, V. - Diels, J.: A New Femtosecond UV Source Based on Nd:YAG. In: Conference on Lasers and Electro-optics, OSA Technical Digest. Washington DC : Optical Society of America, 1999, p. 478. ISBN 1-55752-595-1.
Kubeček, V. - Biegert, J. - Diels, J. - Kokta, M.: Practical Source of 50 ps Pulses Using a Flashlamp Pumped Nd:YAG Laser and Passive All-Solid State Pulse Control. In: Optics Commun. 2000, vol. 177, no. 1-6, p. 317-321. ISSN 0030-4018.
Diels, J. - Rambo, P. - Schwarz, J. - Giuggioli, L. - Biegert, J. - Kubeček, V. - Bernstein, R.: Tests of Laser Induced Discharge of High dc Voltage Using High-Power Femtosecond UV Pulses. In: SPIE Proceedings, Vol. 3886: International Forum on Advanced High-Power Lasers and Applications APHLA'99. Washington : SPIE, 2000, p. 1.

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Solid State Lasers and their Medical Applications

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: hjelin@troja.fjfi.cvut.cz

Staff: H. Jelínková, V. Kubeček, M.Čech, A. Novotný, M.Němec
PhD students: P. Černý, J. Šulc
5th year students: D.Dvořáček

Physics of solid state lasers has been investigated and tens of solid state laser systems (Nd:YAG, Nd:YAP, alexandrite, ruby, Er:YAP, Tm:YAG, CTH:YAG, CTE:YAG, Er:YAG) generating in spectral region from 0,35 ?m to 3 ?m have been developed and used in medical, industrial, satellite laser ranging, and scientific applications.
The basic research includes new methods of picosecond laser pulse generation (nonlinear mirror technique, passive negative feedback, pulse compression), generation of Raman shifted wavelengths, eye-safe laser sources.
Medical applications of solid-state lasers include studies of the interactions of laser radiation with a biological tissue in ophthalmology, dentistry, cardiology, dermatology. A special laser beam delivery systems (mirrors arm, waveguides) for mid-infrared radiation and powerful laser pulses are studied.
The group has active scientific contacts with universities and research institutions in France (University of Limoges), Japan (University of Tohoku, Himeji Institute of Technology), Italy (University of Pavia), Russia (Institute of Physics, Academy of Sciences), and USA (University of New Mexico).

Projects supported by grants:

  • Jelínková, H.: Tunable alexandrite laser for medical applications (Czech Grant Agency No. 102/99/1247)
  • Jelínková, H.: Delivery of powerful laser radiation (Czech Grant Agency No. 102/99/1250)
  • Kubeček, V.: Femtosecond laser for spectroscopy and optical communications (Czech Grant Agency No. 102/97/0580)

List of Selected Publications and Conference Contributions:
H.Jelínková, J.Šulc, P.Černý, M.Čech, V.Kubeček,, Yi-Wei Shi, Y.Matsuura, M.Miyagi,Přenos vysokovýkonových Nd:YAG impulsů speciálním vlnovodem, Jemná mechanika a optika,1/2000 p.20-22, leden 2000, ISSN 0447-6441, Index 46 723.
J.Šulc, H.Jelínková, T.Dostálová, M.Miyagi,Tuned alexandrite laser for dentistry, In: Solid State Lasers IX, R.Scheps, Editor, Proceedings of SPIE, Vol. 3929, p.330-337, 2000, ISSN 0277-786X, ISBN 0-8194-3546-5.
T.Dostálová, H.Jelínková, J.Šulc, P.Černý, M.Němec, M.Čech, J.Dušková, M.Krátký, M.Miyagi, Laser radiation propagation in the hard and soft dental tissue, In: Lasers in Dentistry VI, John D.B.Featherstone, Peter Rechman, Daniel Fried, Editors, Proceedings of SPIE Vol.3910, p.24-29, 2000, ISSN 1017-2661, ISBN 0-8194-3526-0.
H.Jelínková, J.Pašta, J.Šulc, M.Němec, Er:YAG laser radiation in experimental ophthalmologic applications, In: Ophthalmic Technologies X., Pascal O.Rol, Karen M.Joos, Fabrice Manns, Editors, Proceeding of SPIE Vol. 3908, p.253-258, USA, 2000.
H.Jelínková, M.Miyagi, P.Černý, J.Šulc, Yi-Wei Shi, Y.Matsuura, Nd:YAG picosecond pulses delivery by cyclic olefin polymer coated silver hollow glass waveguide, , In: Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II, Tuan Vo-Dinh, Warren S.Grundfest, David A.Benaron, Editors, Proceedings of SPIE Vol.3911, p.276-283, 2000, ISSN 1605-7422, ISBN 0-8194-3527-9.
P.Černý, P.G.Zverev, H.Jelínková, T.T.Basiev, L.I.Ivleva, V.V.Osiko, Comparison of stimulated Raman scattering of picosecond pulses in tungstate crystals, In: Nonlinear Materials, Devices, and Applications, Jeffrey W.Pierce, Editor, Proceedings of SPIE Vol.3928, p.124-131, 2000, ISSN 0277-786X, ISBN 0-8194-3545-7.
P.Černý, H.Jelínková, Comparison of stimulated Raman scatterring of picosecond pulses in gaseous and solid state media, In: Photonics, Devices, and Systems, M.Hrabovský, P.Tománek, M.Miler, Editors, SPIE Vol.4016, pp.453-458, January 2000, ISSN 0277-786X/00, ISBN 0-8194-3641-0..
H.Jelínková, A.Jančárek, M.Vrbová, D.Dvořáček, G.Kuhnová, J.Šulc, M.Němec, P.Černý, V.Kubeček, J.Kvasnička, M.Kokta, Infrared laser - tissue interaction during transmyocardial laser revascularization, In : A Window on the Laser Medicine World, Longo, Hofstetter, Pascu, Waidelich, Editor, SPIE, Vol. 4166, p.48-53, 2000.
V.Kubeček, H.Jelínková, Y.Takagi, A.Agnesi, M.R.Kokta, Continuously pumped Cr:YAG laser, In: Photonics, Devices, and Systems, M.Hrabovský, P.Tománek, M.Miler, Editors, SPIE Vol.4016, pp.269-274, January 2000, ISSN 0277-786X/00, ISBN 0-8194-3641-0.
P.Černý, P.G.Zverev, H.Jelínková, T.T.Basiev, Efficient Raman shifting of picosecond pulses using BaWO4 crystal, Optics Communications 177, p.397-404, 15 April 2000
J.Pánek, P.Hříbek, V.Kubeček, H.Jelínková, M.Zavoral, Cr:Tm:Ho:YAG (2.1 um) and Nd:YAG (1.444 um) pulsed-laser lithotripsy of bile duct stones, Czechoslovak Journal of Physics, Vol.50, No.9, p.1027-1041, 2000.
H.Jelínková, P.Černý, J.Šulc, V.Kubeček,, M.Miyagi, Yi-Wei Shi, Y.Matsuura, Polymer hollow-glass waveguide for delivery of first and second harmonic Nd:YAG laser picosecond pulses, In : Conference on Endoscopy, Laser Delivery and Sensors, SPIE BiOS Europe 2000.

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Capillary Discharge for X-ray Laser Pumping

Faculty of Nuclear Sciences and Physical Engineering
Department of Physical Electronics
V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Tel: +420 2 2191 2724, Fax: 688 4818,
email: vrbova@troja.fjfi.cvut.cz

Researchers: M. Vrbová, M. Kálal, L. Pína, J. Limpouch, M. Šiňor, A. Jančárek, A. Fojtík, R. Havlíková, J. Pavel

A fast capillary discharge is a promising alternative of table top soft X-ray laser pumping. Our aim is to develop a system with a lasing wavelengths shorter than 20 nm. As a starting point we have studied both theoretically and experimentally the discharge in the evacuated polyacetal capillary which would result in laser action at Balmer alpha transition of hydrogen like carbon ion (18.2 nm). Special ultraviolet and soft x-ray spectral diagnostics is developed to measure time profiles of the plasma temperature and density. Experiment with the capillary filled by the material ablated from the wall is prepared. Role of the pinching and is studied. Atomic processes which would establish the inversion population are analyzed.
Our research in this field has been started in the year 1998. It is based on the long term experience of the participants in the fields of laser plasma modeling, experiments with discharge pumped gas lasers and soft X-ray plasma diagnostics. International collaboration has been started. Common research has been done together with the Austrian and Russian colleagues and collaboration with German and French laboratories is prepared. Part of the work has been done in the frame of CTU research plan Lasers and their Applications.

Projects supported by grants:

  • 2/20(298) - Vrbová, M.:Rakousko-český příspěvek k výzkumu rentgenového laseru buzeného elektrickým výbojem (Austrian-Czech Contribution to the Research of Electrical Discharge Pumped X-R ray Laser) 1999 – 2000.
  • GA102/99/1559 - Kálal, M.: Rentgenový laser buzený kapilárním elektrickým výbojem (X-Ray Laser Pumped by Electrical Capillary Discharge) 1999 - 2001
  • LA 055 - Vrbová, M.: Výzkum v rámci Mezinárodního centra hustého magnetizovaného plazmatu (Research in the Frame of International Center Of Dense and Magnetized Plasma) 2000 - 2003
  • LN00A100 - Vrbová, M.: Výzkumné centrum laserového plazmatu (Laser Plasma Research Center) 2000 - 2004

List of Selected Publications and Conference Contributions:
Vrba, P. - Koláček, K. - Vrbová, M. - Schmidt, J. - Boháček, V.: Evolution on Z-Pinch in Argon-Filled Capillary. In: Czechoslovak Journal of Physics. 2000, vol. 50, no. 9, p. 1043-1050. ISSN 0011-4626.
Vrba, P. - Vrbová, M.: Investigation of Capillary Z-Pinch Driven by External Circuits. In: Czechoslovak Journal of Physics. 2000, vol. 50, no. 3, p. 189-192. ISSN 0011-4626.
Vrbová, M. - Vrba, P.: XRL'2000 Sedmá mezinárodní konference o rentgenových laserech.
In: Jemná mechanika a optika. 2000, roe. 45, e. 1, s. 1. ISSN 0447-6441.
Vrba, P. - Vrbová, M.: Z-Pinch Evolution in Capillary Discharge. In: Contributions to Plasma Physics. 2000, vol. 40, no. 5+6, p. 581-595. ISSN 0863-1042.
Vrbová, M. - Jančárek, A. - Pína, L. - Vrba, P. - Bobrova, N. - Sasorov, P. - Kálal, M.: A Study of Electrical Discharge in Polyacetal Capillary. In: 7th International Conference XRL'2000, Saint Malo. Orsay : Université Paris-Sud, 2000, p. 63.
Vrba, P. - Vrbová, M. - Hebenstreit, M. - Neger, T. - Poeckl, M. - Bobrova, N. - Sasorov,P.:
Estimation of the Electron Temperature in Li2CO3 Discharge In: 7th International Conference XRL'2000, Saint Malo. Orsay : Université Paris-Sud, 2000, p. 62.
Kálal, M. - Vrbová, M. - Jančárek, A. - Limpouch, J. - Pína, L. - Šiňor, M. - Vrba, P. - Drška, L. - Nádvorníková, L.: Optical Diagnostics of Evacuated Polyacetal Capillary Discharge. In: XXVI European Conference on Laser Interaction with Matter. Book of Abstracts. Praha : EVUT, Fakulta jaderná a fyzikálni inženýrská, 2000, p. 163.
Vrba, P. - Vrbová, M. - Kálal, M. - Jančárek, A. - Fojtík, A.: Role of Initial Vapor Density in Z-Pinch Polyacetal Capillary Discharge. In: International Workshop on Dense Magnetized Plasma IWDMO'2000. Warsaw: Institute of Plasma Physics, 2000, p. 7.
Vrba, P. - Vrbová, M.: Temperature Dependence of Ion Abundance in X-ray Laser Mixtures. In: Proceedings of International Conference on Phenomena in Ionized Gases. Warsaw: Institute of Plasma Physics, 1999, vol. I, p. 249-250.

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  Department of Materials 
Fracture Mechanics and Damage Mechanics

Faculty of Nuclear Sciences and Physical Engineering
Department of Materials
Trojanova 13, 120 00 Prague 2, Czech Republic
Tel: +420 2 2435 8501 to 9, Fax: 2435 8523,
email: office@kmat.fjfi.cvut.cz

Staff: I.Nedbal, P.Kopřiva, J.Siegl, J.Kunz, H.Lauschmann,M.Karlík, J.Adámek
PhD students: J.Nohava, O.Kovářík

The research activities of the Department are directed towards damage mechanics applied to the reliability of mechanical systems. Fatigue crack initiation and growth under variable loadings are studied by means of experimental studies, microfractography, and probabilistic approach to damage processes.
By using scanning electron microscopy, the relationship between micromorphologic features of fracture surfaces and quantitative characteristics of fracture processes is investigated. Fractographic methods of the reconstitution of fatigue crack kinetics have been developed and are widely used, especially in the aircraft industry.
The effect of surface conditions on the fatigue properties of bodies and structure parts has been studied by means of the loading system (SF-test) developed at the Department.

Projects supported by grants:
Siegl,J.: Failure Processes in Thermally Sprayed Materials. Grant Agency of Czech Republic No. 106/01/0094.
Lauschmann,H.: Computer aided Quantitative Fractography of Fatigue Fractures. Grant Agency of Czech Republic No. 106/00/1715.
Nedbal, I.: Quantitative Fractography of Fatigue Fractures and Failure Analysis, Grant Agency of Czech Republic No.106/97/0819.
Siegl, J.: Surface Engineering, Grant Agency of Czech Republic No.106/97/S008
Karlík, M.: Development of Aluminium Alloy Sheet with Improved Plasticity for Finstock Applications No.EUREKA OE 34/2

Research plans:
Characterization of Materials. Research Plan: MSM 210000021 (in collaboration with the Department of Solid State Engineering).
Nuclear Installations, Nuclear Safety, and Radiation Protection. Research Plan:MSM 210000020 (in collaboration with the Department of Nuclear Reactors).

List of Selected Publications and Conference Contributions:
Nedbal, I., Siegl, J., Kunz, J.: Relation Between Striation Spacing and Fatigue Crack Growth Rate in Al-Alloy Sheets. In: Advances in Fracture Research. Proc. ICF 7, Houston (Ed. K. Salama et al.). Vol.5, Oxford, Pergamon Press 1989, pp. 3483-3491, ISBN 0-08-034343-0.
Kunz, J., Nedbal, I., Siegl, J.: Application of Fractography in Full-Scale Tests of Aircraft Structure Parts. In: Fracture Behaviour and Design of Materials and Structures. Proc. ECF 8, Torino (Ed. D. Firrao). Vol. III, Cradley Heath, EMAS 1990, pp. 1662-1669, ISBN 0-94-7817-41-7.
Siegl, J., Schijve, J., Padmadinata, U.H.: Fractographic Observations and Predictions on Fatigue Crack Growth in an Aluminium Alloy Under MiniTWIST Flight-Simulation Loading. Int. J. Fatigue, 13, 1991, No.2, pp. 139-147, ISSN 0142-1123.
Kunz, J., Nedbal, I., Siegl, J., Pártl, O.: Fractographic Remarks to Fatigue Crack Growth Rate. In: Fatigue 93, Montreal. (Eds J.P.Bailon and I.J.Dickson). Cradley Heath, EMAS 1993, pp. 649-654, ISBN 0-947817-60-3.
Lauschmann, H., Blahout, M.: A Fractographic Reconstitution of a Fatigue Crack Front. Fatigue Fract. Engng Mat. Struct. 17, 1994, No 12, pp. 1391-1396, ISSN 8756-758X.
Siegl, J., Nohava, J. Glogar, P., Kneifl, M.: Fractographic Study of Fatigue Behaviour of Carbon-Carbon Composites. Engineering Mechanics, 5 1998, No. 3, pp. 207-210, ISSN 1210-2717.
Lauschmann, H.: Computer Aided Fractography: The Automatical Evaluation of Striation Parameters. Engineering Mechanics, 5, 1998, No. 6, pp. 377-380, ISSN 1210-2717.
Karlík, M., Jouffrey, B., Belliot, S.: The Copper Content of Guinier-Preston (GP1) Zones in Al-1,84 at. % Cu. Acta Mater., 46, 1998, No. 5, pp. 1817-1825, ISSN 1359-6454.
Nedbal,I., Kunz,J., Siegl,J.: Some Remarks on Fatigue Fracture Marking. In: Fatigue ’99 (Beijing). Vol. 4/4. Eds. X.R.Wu, and Z.G.Wang. Cradley Heath, HEP-EMAS 1999, pp.2373-2378, ISBN 7-04-007582-2/H, ISBN 1 901537 08 0.
Siegl,J., Karlík,M., Kunz,J.: Fractographic Research of Failure Processes in Advanced Materials. In: Fractography 2000 (Proc. Int. Conf., Stará Lesná). Ed. L. Parilák. Košice, Institute of Materials Research of the Slovak Academy of Sciences 2000, pp.70-81, ISBN 80-968468-3-3.
Nedbal,I, Kunz,J., Siegl,J.: Influence of Corrosion Environment and Stress Ratio on Fatigue Crack Growth in Stainless Steel 304 L. In: Fractography 2000 (Proc. Int. Conf., Stará Lesná). Ed. L. Parilák. Košice, Institute of Materials Research of the Slovak Academy of Sciences 2000, pp.293-300, ISBN 80-968468-3-3.
Karlík, M., Siegl, J., Slámová, M., Birol, Y.: Study of the Damage of AA 8006 Twin-Roll Cast Thin Sheets during Forming of Heat Exchanger Fins. In: Aluminium Alloys ( Proc. ICAA-7, Charlottesville, USA). Eds. E.A. Starke et al. Materials Science Forum 2000, Vol. 331-337, Part 1, pp. 619-624 ISBN, 0-87849-853-2.
Lauschmann, H.: Textural Fractography: Estimation of the Mean Striation Spacing and Direction. In: Int. Conf. on Stereology and Image Analysis in Materials Science. Eds. L. Wojnar & K. Rozniatowski. Cracow, Polish Society for Stereology 2000, pp. 241-246, ISBN 83-907892-0-5.

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Mathematical Modelling of Mechanical Failures

Faculty of Nuclear Sciences and Physical Engineering
Department of Materials
Trojanova 13, 120 00 Prague 2, Czech Republic
Tel: +420 2 2435 8501 to 9, Fax: 2435 8523,
email: office@kmat.fjfi.cvut.cz

Staff: V.Oliva, A.Materna
PhD students: P.Michlík

The research activities are mainly directed towards computer simulations of a fatigue crack growth in three-dimensional elements under complicated variable amplitude loading. Such conditions are typical especially for aircraft structures. The research can be subdivided into two areas:

  1. The development of sophisticated methods for engineering prediction of the fatigue crack propagation based on parameters of linear fracture mechanics modified with respect on local constraint.
  2. A direct FEM modelling of cyclic plastic deformation at the front of the growing and closing crack and searching for appropriate local fracture criteria giving the reasonable estimation of the crack rate.
    Some other solved problems: computation of residual compressive stresses induced by coldworking and the evaluation of the corresponding local fatigue life enhancement, computer modelling of large plastic strains due to forming process, evaluation of a stress and strain state in thermal sprayed materials.

Projects supported by grants:
Oliva, V.: Computer Simulations of a Material Damage. University Development Foundation project No. 0549.
Oliva, V.: Computer Modelling of Fatigue Crack Growth in Aluminium Alloys, Grant Agency of Czech Republic No.106/94/0985.
Oliva, V.: Finite Element Method in Nonlinear Continuum Mechanics and Application in Crack Propagation Problem, Grant Agency of Czech Republic No.101/99/0834.

Research Plans:
Characterization of Materials. Research Plan:MSM 210000021 (in collaboration with the Department of Solid State Engineering).


List of Selected Publications and Conference Contributions:
Oliva, V., Kuneš, I.: FEM Analysis of Cyclic Deformation Around the Fatigue Crack Tip After a Single Overload. In: Advances in Fatigue Lifetime Predictive Techniques. ASTM STP 1211. (eds M.R.Mitchell and R.W.Landgraf). Second Volume. Philadelphia, ASTM 1993, pp. 72-90. ISBN:0-8031-1874-0.
Kroupa, F.- Neufuss, K. - Lauschmann, H. - Materna, A. - Oliva, V.: Minimization of the Residual Bending of Plates with Sprayed Coatings. Thermal Spray: Practical Solutions for Engineering Problems, C. C. Berndt (Ed.). Pub. by ASM International, Materials Park, Ohio - USA, 1996, pp. 905 – 910.
Oliva, V., Cséplö, L.- Materna, A., Bláhová, L.: FEM Simulation of Fatigue Crack Growth. (Eleventh Int. Conf. on the Strength of Materials ICSMA-11) Materials Science and Engineering, Vol. A 234-236, 1997, pp. 517-520. ISSN 0921-5093.
Oliva, V. - Materna, A. - Siegl, J.: Three-Dimensional Modelling of Fatique Crack Growth. In: Int. Conf. FRACTOGRAPHY 97, Stará Lesná, 1997, pp.145 - 150, ISBN 80-967814-3-X.
Materna, A. - Oliva, V.: Simulation of the Planar Fatigue Crack with Curved Crack. In : European Conference Junior Euromat 98, Lausanne, The Federation of European Mat. Societies, 1998, p.111.
Materna, A., Oliva, V.: 3D Fatigue Crack Growth under Variable Amplitude Loading. In: Lifetime Management and Evaluation of Plant, Structures and Components. Fourth Int. Conf. on Engng. Struct. Integrity Assess., Ed. J. H. Edwards et al, Dynamic Testing Agency, Cambridge, 1998, pp. 241 – 248, ISBN 1 901537 072.
Materna, A. - Oliva, V.: Computer Simulations of the Fatigue Crack Propagation. Acta Polytechnica – Journal of Advanced Engineering, Vol.40, No.4/2000, p. 137 – 141, ISSN 1210-2709.
Oliva, V. – Materna, A.: 3D-Simulations of Fatigue Crack Growth. In: Engineering Mechanics – International Conference, ITAM-Academy of Sciences of the Czech Republic, Svratka, 2000, p. 13–18, ISBN 80-86246-07-8.

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  Department of Nuclear Chemistry 
Development of Advanced Technologies for Treatment of Liquid Waste Contaminated by Radionuclides or Heavy and/or Toxic Metals

Faculty of Nuclear Sciences and Physical Engineering
Department of Nuclear Chemistry
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: sebesta@br.fjfi.cvut.cz

Staff: F. Šebesta, J. John, A. Motl, J. Steinerová
PhD students: K. Rosíková
5th year students: J. Kameník, M. Němec

The technologies under study/development include: sorption of ions onto composite absorbers containing powdered inorganic ion exchangers, biosorbents, or magnetic adsorbents incorporated into a matrix of modified polyacrylonitrile binder; photocatalytic degradation of organic complexants; and combined treatment processes.
The aim of the research is to develop novel methods of treatment of liquid wastes applicable either to complex radioactive wastes (e.g. decontamination solutions) or to volumic liquid wastes contaminated by low concentrations of heavy or toxic metals (e.g. treatment of contaminated ground water or „polishing“ of pretreated electroplating industry waste water). Relevant attention is paid to the basic study of the separation processes parameters.
The research is conducted within the framework of several projects. Among the most important the following can be listed: "Combined Methods of Liquid Radioactive Waste Treatment", an international programme co-ordinated by the International Atomic Energy Agency, Vienna, and "Highly Versatile but Sustainable Processes for the Removal of Radionuclides from Radioactive Wastes (SUSRAD)", an international project supported by the INCO Copernicus programme by EU, and several projects carried out for the U.S. Department of Energy under an Agreement with Florida State University and supported by the US DOE International Programme.
The main co-operating laboratories include Idaho National Engineering and Environmental Laboratory, U.S.A.; Florida State University, Tallahassee, FL, U.S.A.; Reading University, U.K.; Aristotle University, Thessaloniki, Greece; Chalmers University of Technology AB, Sweden ; Institute of Radioecological Problems, Belarus; and Alldeco s.r.o., Slovak Republic

List of Selected Publications and Conference Contributions:
Šebesta, F., John, J., Motl, A.: Inorganic-Organic Composite Absorbers with Polyacrylonitrile Binding Matrix - Possible Applications, In: Proc. SPECTRUM'94 Nuclear and Hazardous Waste Management International Topical Meeting, Atlanta, GA, August 14-18, 1994, Vol. 2, ANS, La Grange Park, Illinois 1994, pp. 856-861
Šebesta, F., John, J., Motl, A.: Separation and Concentration of Contaminants Using Inorganic-Organic Composite Absorbers, In: Proc. BUDAPEST'94 Second International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe, Budapest, Hungary, 20-23 September 1994, pp. 1052-1055
Šebesta, F., John, J., Motl, A., Štamberg, K., Watson, J.: Development of PAN-Based Absorbers for Treating Waste Problems at U.S. DOE Facilities, In: Slate, S. - Feizollahi, F., Creer, J., eds.: ICEM'95 Proc. The Fifth International Conference on Radioactive Waste Management and Environmental Remediation, Vol. 1, Berlin, 3-7 September 1995, ASME, New York 1995, pp. 361-365.
Šebesta, F., John, J., Motl, A.: Removal of Cesium and Strontium from Highly Saline Acidic or Alkaline HLW Using PAN-Based Composite Absorbers, In: Baker, R., Slate, S., Benda, G., eds.: ICEM'97 Proc. Sixth International Conference on Radioactive Waste Management and Environmental Remediation, Singapore, 12-16 October, 1997, ASME International, New York 1997, pp. 241-244.
John, J., Šebesta, F., Motl, A.: Application of new Inorganic - Organic Composite Absorbers with Polyacrylonitrile Binding Matrix for Separation of Radionuclides from Liquid Radioactive Wastes, In: Choppin, G., Khankhasayev, M. Kh., eds.: Chemical Separation Technologies and Releated Methods of Nuclear Waste Management, Kluwer Academic Publishers, 1999, pp. 155-168.
Šebesta, F.: Preparation of Granular Forms of Powdered Materials for their Application in Column Packed Beds, In: Misaelides, P. et al. eds.: Natural Microporous Materials in Environmental Technology, Kluwer Academic Publishers, 1999, pp. 473-484.
Rosíková, K., John, J., Šebesta, F., Motl, A.: Separation of Radionuclides from Organic Compexants Bearing Wastes, In: NRC5 5th International Conference on Nuclear and Radiochemistry, Pontresina, Switzerland, September 3 - 8, 2000, Extended Abstracts, vol. 2, pp. 569-572.

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Modelling of Environmental Migration of Pollutants

Faculty of Nuclear Sciences and Physical Engineering
Department of Nuclear Chemistry
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: sbenes@br.fjfi.cvut.cz

Staff: P. Beneš, K. Štamberg, D. Vopálka, J. Dolanský,
K. Chalupská
PhD students: H. Kroupová, M. Ligaunová, M. Čechová
5th year student: L. Široký, M. Bozenhard

The migration of pollutants in surface streams, soils and sediments has been studied with the aim of improving experimental and mathematical modelling of the migration and thus enabling better prediction of environmental effects of pollutants.
Three main approaches have been chosen: laboratory investigation of principal factors affecting the interaction of pollutants with the solid phase of the system studied, use of radionuclides for developing and checking the new modifications of measuring methods of migration - diffusion in heterogeneous diffusion media; development of mathematical models of the migration considering important factors affecting the migration; verification of the models and their parts by laboratory experiments or by field migration data and simulation of migration processes.
The main systems and processes studied to date were: migration of Cs-137 in a small river receiving waste waters from a nuclear power plant; migration and diffusion of lead, Cd-109, Cs-137, Zn-65 and Sr-85 in soils of a small forested watershed; migration of copper, nickel and zinc in a tailings pond of a uranium mill; transport processes of U-233 species, Cs-137, Sr-85 and Cd-109 in the near-field of deep repositories of spent nuclear fuel; sorption of Cs-137 and Sr-85 on Vltava River sediments and modelling of cesium migration in a specified part of Vltava River; sorption and migration of Eu-152 in sandy sediments from the site of planned radioactive waste repository in Gorleben.
The research has been carried out in co-operation with laboratories and institutions in the Czech Republic and abroad, such as the T. G. Masaryk Water Research Institute in Prague, DIAMO uranium mine in Dolní Rožínka, Nuclear Research Institute Řež, Research Institute of Nuclear Power Plants in Slovakia, Karlsruhe Research Center in Germany, CEN Cadarache in France, Helsinki University of Technology and the International Atomic Energy Agency.

Project supported by grant:
Štamberg, K.: „Modelling and simulation of processes of contaminants migration in barrier materials of disposal facilities, in rivers and water reservoirs“ GACR No. 104/97/1050

List of Selected Publications and Conference Contributions:
Beneš, P., Černík, M.: Migration of radionuclides in rivers: effect of the kinetics of radionuclide interaction with suspended solids. In: Freshwater and Estuarine Radioecology. G.Desmet et al. (eds.). Elsevier Science B.V., Amsterdam 1997, pp. 109-115.
Štamberg, K., Vopálka, D., Beneš, P., Slávik, O.: A simplified approach to modelling underground migration of radionuclides from contaminated river sediments. J. Contaminant Hydrology, 26, 1997, pp. 301-307.
Štamberg, K., Vopálka, D., Škrkal, J., Beneš, P., Chalupská, K.: Simulation of transport of uranium(VI) species through the bed of bentonite. Mat.Res.Soc.Symp.Proc. Volume 506, Scientific Basis for Nuclear Waste Management XXI, I.G. McKinley, Ch. McCombie, eds., MRS, Warrendale, Pennsylvania, 1997, pp. 485-493.
Štamberg, K., Škrkal, J., Beneš, P., Chalupská, K.: Modelling and simulation of sorption selectivity in the system: Bentonite - Na+ - HCO3- - CO32- - U(VI) species. In: MIGRATION ´97, Sixth Intern. Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, Sendai, Japan, 26-31 October 1997.
Štamberg, K., Chalupská, K., Dolanský, J., Vopálka, D., Beneš, P.: The study of the sorption of Cs+, Sr2+ and Cd2+ on sodium bentonite. In: Uranium Mining and Hydrogeology II, International Conference and Workshop, Freiberg, BRD, 15-17 September 1998.
Štamberg, K., Škrkal, J., Beneš, P., Chalupská, K., Vopálka, D: Modelling and simulation of sorption selectivity in the bentonite – HCO3- - CO32- - 233U(VI) species system. J.Radioanal.Nucl.Chem. 241, 1999, 487-492.
Štamberg, K., Beneš, P., Dolanský, J., Mizera, J., Vopálka, D.: Modelling of the Sorption of Europium on Bentonite in the Presence of Humic Acid and Carbonates. Conference MIGRATION´99, Lake Tahoe - Incline Village, USA, 26.9. - 1.10.1999.
Beneš, P., Štamberg, K., Široký, L., Mizera, J.: Radiotracer Study and Modelling of Sorption of Europium on Gorleben Sand from Aqueous Solutions Containing Humic Substances. Conference MIGRATION´99, Lake Tahoe - Incline Village, USA, 26.9. -1.10.1999.
Kroupová, H., Vopálka, D., Štamberg, K., Čechová, M.: Modelling of Migration of Cesium in Vltava River., In.: Proc. Prague 2000, Fifth International Symposium & Exhibition on Environmental Contamination in Central & Eastern Europe, 12-14 September 2000, Prague. CD ROM Edition, Florida State University, Tallahassee, FL, USA, contribution No. 433.
Beneš, P., Štamberg, K., Vopálka, D., Široký, L., Procházková, Š.: Kinetics of Radioeuropium Adsorption on Gorleben Sand from Aqueous Solutions. 5th International Conference on Nuclear and Radiochemistry, September 3 - 8, 2000, Pontresina, Switzerland, Paul Scherrer Institute and University Bern, Vol. 2, pp. 428 – 431.
Venkatesan, K.A., Vasudeva Rao, P.R., Štamberg, K.: Study and Modelling of Sorption of Sr(II) on Hydrous Zirconium Oxide. Journal of Radioanalytical and Nuclear Chemistry (in press).

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Radiation Chemistry

Faculty of Nuclear Sciences and Physical Engineering
Department of Nuclear Chemistry
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: mucka@br.fjfi.cvut.cz

Staff: V. Múčka, M. Pospíšil, R. Silber, H. Jurová
PhD Students: V. Čuba, D. Poláková
5th year students: B. Lízalová

The research activities of the group cover mainly two areas of applied radiation chemistry. The first one is directed to the utilization of radiation technology for environment protection. In this field our activity has been concentrated on the study of radiolytic degradation of various hazardous chlorinated hydrocarbons such as trichloro- or perchloroethylenes and predominantly polychlorinated biphenyls. The large volume flow-through apparatus operating in a semicontinuous regime for radiolytic dechlorination of these pollutants was constructed and tested.
At present our attention is devoted to the problems of radiation treatment of municipal wastewater and sludges in close collaboration with Institute of Chemical Technology, Prague, Faculty of Environmental Technology, Dept. of Water Technology and Environmental Engineering. The radiation influencing of physico-chemical parameters of insoluble particles suspended in wastewater, hygienization effects, accelerating of chemical and biological degradations, suppression of foaming and other effects induced by radiation have been intensively studied.
In the second area the research is aimed at the selected two-component mixed oxide systems from the point of view of their catalytic properties and chemical reactivity. The physico-chemical properties, effects of genesis, composition and various kinds of ionizing radiation on the catalytic activity and reactivity tested by decomposition of hydrogen peroxide and reduction with hydrogen have been investigated, respectively. In last period attention has been devoted to the systems containong NiO oxide in interaction with the second component such as ThO2 oxide and ZnO oxide. Simultaneously the role of carriers in various catalytic systems was also examined.

Projects supported by grants:
Múčka,V.: Research of radiolytic degradation of polychlorinated biphenyls in technical media with a high content of PCB’s by accelerated electron beam. GACR No. 104/98/0466.
Pospíšil M.: Intensification of sludge treatment and possibilities of foaming reduction on biological wastewater treatment plants by using of radiation technology. GACR No. 104/00/0867.

List of Selected Publications and Conference Contributions:
MÚČKA, V.- SILBER, R.- POSPÍŠIL, M.- ČAMRA, M.- BARTONÍČEK, B. Radiation degradation of polychlorinated biphenyls. In: Radiation Physics and Chemistry. 2000,vol. 57, p. 489-493.
SILBER, R.- MÚČKA, V.- POSPÍŠIL, M.- ČAMRA, M.- BARTONÍČEK, B. Electron beam long-term dechlorination of PCBs. In Abstract No. 896. Fifth international symposium and exhibition on environmental contamination in central and eastern Europe 12-14 September, 2000 Prague, CR.
MÚČKA, V.- SILBER, R.- POSPÍŠIL, M.- ČAMRA, M.- BARTONÍČEK, B. Radiolytic dechlorination of PCBs in presence of active carbon, solid oxides, bentonite and zeolite. In Radiation Physics and Chemistry. 2000, vol.59, p. 399-404.
MÚČKA, V.- POSPÍŠIL, M.- SILBER, R. The promoters in dechlorination of PCBs. In CTU Reports, Part B. Proceedings of Workshop 2000. p.514. Prague CR.
MÚČKA, V.- PODLAHA, J.- SILBER, R. NiO-ThO2 mixed catalysts in hydrogen peroxide decomposition and influence of ionizing radiation. In Radiation Physics and Chemistry. 2000, vol 59, p.467-475.

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Radiotracer Method in Environmental Studies

Faculty of Nuclear Sciences and Physical Engineering
Department of Nuclear Chemistry
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: benes@br.fjfi.cvut.cz

Staff: P. Beneš, J. Mizera, J. Dolanský, O.Múčková
PhD students: I. Hvoždová, M. Cabalka
5th year student: A. Jansová

The radiotracer method has been used for the analysis of speciation of pollutants in environmental samples, and for characterisation of the interaction of pollutants with humic substances and the solid phase in surface waters.
Application of the radiotracer method has facilitated the development of separating methylmercury and inorganic mercury from human hair. Speciation of cadmium in soil solutions was investigated with Cd-109 added to soil extracts and with electrophoresis, ultrafiltration and dialysis. The results corroborate that the radiotracer method enables us to avoid the shift of equilibria in solution caused by many invasive methods of speciation analysis.
The radiotracer method was used for the study of the complexation of cadmium, europium and uranium with humic substances in aqueous solutions. Special attention has been paid to the kinetics of dissociation of metal humate complexes, which can significantly affect environmental migration of metals and radionuclides. The kinetics has yet been studied with europium, simulating behaviour of tervalent actinoids. The effect of humic substances on the distribution of uranium and cadmium between clay and aqueous solution was investigated with the aim to elucidate the effect of humic substances on the migration of these contaminants in the environment and to examine potential application of clay-humate complex for treatment of waste waters.
Laboratory batch experiments were carried out where the distribution of Cs-137, Co-58 and Sr-85 between sediments and river water was measured. The results elucidated a mechanism of interaction of the radionuclides with sediments and indicated some factors to be considered in modelling the migration of radionuclides in rivers.
Part of this research was carried out in the framework of research programmes coordinated by the International Atomic Energy Agency. Some of the problems were studied in collaboration with Institut fuer Nukleare Entsorgungstechnik, Forschungszentrum Karlsruhe.

Project supported by grant:
Beneš, P.: „The effect of humic substances on the speciation and migration of radionuclides in ground waters“. GACR No. 104/98/0467.

List of Selected Publications and Conference Contributions:
Beneš, P.: Radiotracer method in the study of environmental speciation and migration of contaminants. Biol.Trace Elem.Res., 43/44, 1994, pp. 79-85.
Beneš, P., Steinnes, E.: Trace chemistry processes. In: Trace Elements in Natural Waters. B.Salbu, E.Steinnes (eds). Chapter 2. CRC Press, Boca Raton, Fla. 1995, pp. 21-39.
Von Gunten, H. R., Beneš, P.: Speciation of radionuclides in the environment. Radiochim. Acta 69, 1995, pp.1-29.
Kratzer, K., Spěváčková, V., Beneš, P.: The study of chemical forms of mercury in human hair and other bio-environmental samples. In: Co-ordinated Research Programme on Assessment of Environmental Exposure to Mercury in Selected Human Populations as Studied by Nuclear and Other Techniques. Report on the Fourth Research Co-ordination Meeting, Honolulu, 11-15 December, 1995. NAHRES. International Atomic Energy Agency, Vienna 1996.
Beneš, P., Mizera, J.: Applications of electrophoresis for the study of complexation of cadmium with humic substances using 109Cd as radiotracer. Radiochim. Acta 74, 1996, pp. 185-188.
Šebestová, E., Machovič, V., Pavlíková, H., Spěváčková, V., Beneš, P., Kratzer, K. , Mizera, J.: Investigation of potential application of humate-clay complex to the treatment of industrial waste waters. Acta Montana IRSM AS CR, Series AB, No.2(99), 1996, 41.
Beneš, P., Kratzer, K., Vlčková, Š., Šebestová, E. : Adsorption of uranium on clay and the effect of humic substances. Radiochim.Acta 82, 1998, pp.367-373.
Beneš, P., Czerwinski, K.R., Dolanský, J.: Effect of humic acid on the electrophoretic mobility of uranium(VI) in aqueous solutions. Radiochim.Acta 84, 1999, pp. 95-100.
Mizera, J., Beneš, P., Šebestová, E.: Radiotracer study of the stability of cadmium complexes with humates and their size fractions. In: 13th Radiochemical Conference, Mariánské Lázně, Czech Republic, 19-24 April 1998.
Beneš P., Mizera J.: Radiotracer analysis of cadmium speciation in soil solutions using electrophoresis, dialysis, centrifugation and ultrafiltration. Biol.Trace Elem.Res. 71-2, 1999, pp. 92-102.
Mizera J., Beneš P.: Electromigration of Eu and its complexes with humic acid. In: Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, Lake Tahoe, California, USA, 26.9. - 1.10.1999.
Mizera J., Beneš P., Hvoždová I., Jansová A.: Application of radiotracer techniques to a kinetic study of the interaction of Eu with humic acid. In: 5th International Conference on Nuclear and Radiochemistry, 3-8.9.2000, Pontresina, Switzerland.
Hvoždová I., Jansová A., Mizera J., Beneš P.: Kinetics of dissociation of Eu humates. In: Proceedings Prague 2000 – Fifth International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe, 12-14.9.2000. CD ROM Edition, Florida State University, Tallahassee, FL, USA, contribution No. 459, 6 p.
Mizera J., Dolanský J., Beneš P.: Radiotracer study of the electrophoretic behavior of Eu and its complexes with humic acid. Radiochim. Acta, in press.

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Radioanalytical Methods for Monitoring of the Environment and for Safeguarding Nuclear Materials

Faculty of Nuclear Sciences and Physical Engineering
Department of Nuclear Chemistry
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: john@br.fjfi.cvut.cz

Staff: J. John, F. Šebesta, P. Beneš, J. Steinerová
PhD students: M. Bartusková, H. Dulaiová, B. Sedlářová, M. Němec

Development and application of radioanalytical methods are directed mainly towards methods for monitoring the environment and new methods applicable for nuclear materials safeguards. However, methods for application in other areas (e.g. NPP operation or radioactive waste management) are recently receiving increasing attention, too.
Typical examples of methods introduced into routine practice for analysing environmental samples are: non-destructive determination of artificial and natural radionuclides in solid bulk samples (soil, sediments) by means of low-level gamma-ray spectrometry; Ra-226 determination in liquid samples; determination of radon and its specific emanation; determination of Cs-137 in surface water, milk or urine; fast determination of higher concentration of uranium; determination of Co-60 in surface water, etc.
New methods are being developed for non-destructive determination of Pb-210 and uranium in bulk samples of solid materials, determination of Sr-90 in fresh water (development of selective absorbers for strontium) or soil and sediments, determination of americium in urine, destructive determination of Pb-210 in solid samples, or Hg-203 determination in NPP technological solutions. Part of the development work is carried out in collaboration with the National Radiation Protection Institute, Prague, and the Interfaculty Reactor Institute, TU Delft, The Netherlands.
New radioanalytical methods have been developed and introduced for application in safeguarding nuclear materials. Combined measurement of soft gamma- and X- rays are used. One method has been adopted for application in in-field routine inspections performed by the State Office for Nuclear Safety.
All the methods described above are applied both in routine analytical practice and during work on other research projects of the department. Recent projects include: “Evaluation of contamination of catchment of the river Elbe (Labe) by radionuclides” and “Influence of uranium mining and milling on the contamination of river bottom sediments in the catchment of the river Ohře”.

List of Selected Publications and Conference Contributions:
Šebesta, F., John, J., Motl, A.: Separation and Concentration of Contaminants Using Inorganic-Organic Composite Absorbers, In: Proc. BUDAPEST'94 Second International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe, Budapest, Hungary, 20-23 September 1994, pp. 1052-1055.
Sus, F., John, J. Sus, R.: Portable spectrometric system based on a CdTe detector (in Czech), Nuclear Research Institute Řež, February 1995, 25 pp.
John, J.: Finalising of a field method of uranium enrichment verification (in Czech), Faculty of Nuclear Sciences and Physical Engineering, CTU Prague, November 1995, 67 pp.
John, J.: Uranium enrichment verification with portable spectrometric system Canberra InSpector (in Czech). Software package “Safeguards” and manual, Faculty of Nuclear Sciences and Physical Engineering, CTU Prague, version 1.1 - November 1995, 22 pp.; version 3.1 - December 1997, 25 pp.; version 4.1, - November 1999, 34 pp.
Beneš, P., John, J., Šebesta, F.: Analysis of the Contamination of Freshwater Sediments in Bohemia with Radionuclides, In: Workshop'97, Preservation & Creation of the Environment, Prague, 20-22 January 1997. CTU Prague 1997, pp. 1259-1260.
Beneš, P., John, J., Šebesta, F., Veselý, J.: Correlation Analysis of the Contamination of Freshwater Sediments in Labe (Elbe) River Catchment with Gamma Emitting Radionuclides, In: Freshwater and Estuarine Radioecology. G. Desmet et al. (eds.). Elsevier Science B.V., Amsterdam 1997, pp. 215-218.
Beneš, P., John, J., Šebesta, F.: What do radioactive equilibria say about the contamination of freshwater sediments in Bohemia with natural radionuclides? Radiochim. Acta 78, 1997, pp. 163-165.
Dulaiová, H., John, J. Bečková, V., Bučina, I.: Determination of Americium by Extraction Chromatography in Urine Samples, In: Proc. BAER'99 - The 45th Conference on Bioassay, Analytical & Environmental Radiochemistry, Gaithersburg, MD, USA, 18-22 October 1999. National Institute of Standards and Technology, Gaithersburg, 1999.
John, J., Šebesta, F., Beneš, P.: Environmental Radioanalytical Laboratory of the Czech Technical University in Prague - Performance Assessment, Intercomparisons, and Upper Elbe (Labe) Basin Radionuclide Monitoring Results, In: Proc. BAER'99 - The 45th Conference on Bioassay, Analytical & Environmental Radiochemistry, Gaithersburg, MD, USA, 18-22 October 1999. National Institute of Standards and Technology, Gaithersburg, 1999, 5 pp.
John, J., Šebesta, F.: Determination of Hg-203 in Primary Circuit Water of the Nuclear Power Plant Dukovany (in Czech), Faculty of Nuclear Sciences and Physical Engineering, CTU Prague, 1999, 16 + 6 pp.
John, J., Bartusková, M., Dulaiová, H.: Low-Energy Photon Radiation Self-Absorption Correction Methods (in Czech), Chem. listy, 94(9), 2000, pp. 853-855.

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  Department of Dosimetry and Application of Ionizing Radiation 
Applications of Radiation and Radionuclides in Medicines

Faculty of Nuclear Sciences and Physical Engineering
Department of Dosimetry and Application of Ionizing Radiation
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: cechak@br.fjfi.cvut.cz

Staff: T. Čechák ,V. Hanák, M. Vognar, V. Spěváček,
Part-time staff: P. Dvořák, M. Soukup
PhD students: J. Zimák, J. Novotný, H. Hlavatá

The use of ionising radiation in medical diagnostic and therapeutic examinations and treatments convey radiation doses and health care benefits to the individuals involved. Because of widespread applications of various radiation sources and radiopharmaceuticals, the collective dose to the population is significant and is increasing. Despite the relatively low doses per examination, the magnitude of the medical practice makes the diagnostic use of X rays the dominant source of medical radiation exposures. Doses from the use of radiopharmaceuticals show increasing tendency and should be controlled by using more efficient and sensitive measuring and imaging methods including implementation of appropriate quality control and quality assurance. Recently it has been recognised that protons and heavy ions, with their well-defined range and limited scattering potential, could be an ideal radiation modality for improving physical dose localisation to a target in some therapy treatments.
The research in this field is focused on the following problems: estimation of population doses due to the medical use of radiation and radionuclides, assessment of patient doses and methods of their optimisation and reduction, monitoring of exposures received by medical personnel, evaluation of depth dose distributions from various particles in tissue equivalent materials, dosimetry and radiation protection aspects of the use of protons in special therapy treatments, measurement of photoneutrons and induced activity around medical linear accelerators.
3D dosimetry method for the determination of dose space distribution in tissue and tissue-equivalent mediums is being developed. Effect of ionizing radiation on chemical dosimetric systems - Fricke dosimeter type - or on polymerizing substances in the gel form is utilized and their response is evaluated by means of NMR. 3D dosimetry method is of profound importance in the preparation of irradiation plans at stereotactic radiotherapy.

Project supported by grants:
Čechák, T.: Quality Assurance of three-dimensional Processes in Radiotherapy, EURECA, EU 1758

List of Selected Publications and Conference Contributions:
Novotný, J.Jr. - Spěváček, V. - Novotný, J. - Čechák, T. - Vymazal, J. - Tintěra, J.: 3D gel dosimetry-method review and our first experience, Symposium XXI. Rádiohygienické dni, Jasná pod Chopkom 23.-27.listopadu 1998.
Sabol, J. - Lai, S.Y. - Weng, P.S. - Chu, T.C.: Dose Assessment Based on ICRP 60 Recommendations. Nuclear Science J. 30, 1993, 377.
Linh, H.Q. - Průchová, H. - Petr, I. - Sabol, J.: Microdosimetric Studies of Photon Fields. In: Workshop 93, Part B, Czech Technical University, Prague, 1993, 59.
Sabol, J. - Lai, S.Y. - Weng, P.S. - Chu, T.C.: Dose Assessment Based on New Conversion Factors. In: Proceedings - The 3rd Symposium on Environmental Radiation Monitoring Technology. Taiwan Radiation Monitoring Center, Kaohsiung, 1993, 56.
Spěváček, V. - Čechák, T. - Novotný, J. - Dvořák, P.: 3-Dimensional Dosimetry in Radiotherapy. In: XXII. Days of Radiation Hygiene.Praque : National Radiation Protection Institute, 1999, vol. 1, p. 93-95.
Spěváček, V. - Čechák, T. - Novotný, J. - Dvořák, P.: Temperature Dependence of 3D-Polymer Gel Dosimeter Response. In:. XXII. Days of Radiation Hygiene. Praque : National Radiation Protection Institute, 1999, vol.1, p. 95-97.
Čechák, T. - Spěváček, V.: 3-Dimensional Dosimetry in Radiotherapy. In: Proceedings of Workshop 99. Prague : CTU, 1999, vol. 3, p. 323.
Novotný, J. - Dvořák, P. - Spěváček, V. - Tintěra, J. - Novotný, J. -Čechák, T.: Application of 3-D Polymer Gel Dosimeter in Clinical Dosimetry. In: 23th Days of Radiation Protection. Praha : ČVUT, FJFI, KDAIZ, 2000, vol. 1, p. 45-47.
Novotný, J. - Dvořák, P. - Spěváček, V. - Novotný, J. - Čechák, T.: The Use of Gel Dosimetry for KGK Stereotactic Radiosurgery Verification. In: 6th Annual Meeting of the Leksell Gamma Knife User Society. Munchen :Urban & Fisher Verlag, 2000, vol. 1, p. 289-292.
Spěváček, V. - Marek, M. - Novotný, J. - Čechák, T.: 3-D Polymer Gel Dosimetry in Boron Neutron Capture Therapy. In: 23th Days of Radiation Protection. Praha : ČVUT, FJFI, KDAIZ, 2000, vol. 1, p. 64-65.
Novotný, J. - Spěváček, V. - Dvořák, P. - Novotný, J. - Čechák, T.: 3-D Polymer Gel Dosimetry. In: 23th Days of Radiation Protection. Praha : ČVUT, FJFI, KDAIZ, 2000,
vol. 1, p. 43-44.
Novotný, J. - Spěváček, V. - Dvořák, P. - Novotný, J. - Čechák, T.: Basic Physical Properties of 3-D Polymer Gel Dosimetr. In: 19th ESTRO Annual Meeting. Istanbul : Bogazici University, 2000, vol. 1, p. 286.
Novotný, J. - Spěváček, V. - Dvořák, P. - Novotný, J. - Čechák, T.: 3- Dimensional Polymer Gel Dosimetry. In: 8th International Symposium on Radiation Physics. Prague : CTU, 2000, vol. 1, p. 243. ISBN 80-01-02180-7.

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Biomonitoring Air Pollution by Radioanalytical Methods

Faculty of Nuclear Sciences and Physical Engineering
Department of Dosimetry and Application of Ionizing Radiation
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: musilek@br.fjfi.cvut.cz

Staff: L. Musílek, T. Čechák, J. Gerndt, J. Losinská, V. Spěváček

The group is orientated to the application of analytical methods using ionizing radiation for biomonitoring air pollution caused by various harmful elements. Extensive collaboration has been established with the Interfaculty Reactor Institute of the Delft University of Technology (The Netherlands), the Department of Physical Electronics of FNSPE and the National Museum in Prague.
The maps of air pollution of the area of the Czech Republic by selected elements, e.g. S, Ti, V, Cr, Mn, Zn, and some heavy metals, have been created. An estimate of air pollution sources can be made from these results. Tree bark (oak as one of the most common species in the CR) and lichens (especially Hypogymnia physodes and Parmelia sulcata) are used as biomonitors in the coordinate grid MTB with the field of approx. 132 km2. As historical samples of lichens were available in the collections of NM Prague, their comparison with recent samples provided some information about the development of pollution from approximately the beginning of the century. Analytical methods applied are the radionuclide X-ray fluorescence analysis (RXRFA) with the radiation sources Pu 238 and Fe 55 at the Department of Dosimetry and Application of Ionizing Radiation of FNSPE (for bark samples), particle induced X-ray emission (PIXE) with the 2 MV Van de Graaff accelerator of the Faculty of Mathematics and Physics of the Charles University in Prague, where the Department of Physical Electronics of FNSPE has its laboratory of ion beams (lichen samples) and, finally, instrumental neutron activation analysis (INAA) with the 2 MW research reactor of IRI TU Delft (both bark and lichen samples). All three methods, RXRFA, PIXE and INAA, are complementary and give a good picture of the relative concentrations of pollutants.
The monitoring of the whole country area is associated with the investigation of applied analytical methods and use of tree bark and lichens as biomonitors.

List of Selected Publications and Conference Contributions:
Musílek, L., Čechák, T., Wolterbeek, H.Th., Kuik, P.: Preliminary Study of Environmental Contamination Using Radioanalytical Methods. CTU Seminar 94, Prague, 17-20 January 1994.
Musílek, L., Čechák, T., Wolterbeek, H.Th., Kuik, P.: Study of Environmental Contamination in the Czech Republic Using Radioanalytical Methods. 6th Int. Symp. Radiation Physics, Rabat (Morocco), 18-22 July 1994.
Musílek, L., Čechák, T., Wolterbeek, H.Th., Kuik, P.: Study of Environmental Contamination in the Czech Republic Using Radioanalytical Methods. Applied Radiation and Isotopes 46, 1995, p. 595.
Musílek, L., Čechák, T., Král, J., Wolterbeek, H.Th., Kuik, P.: Radioanalytical Methods in Environmental Monitoring. 10th Int. Cong. Radiation Research, Würzburg (Germany), 27 August - 1 September 1995.
Musílek, L.: Application of Radioanalytical Methods for Biomonitoring Air Pollution. IKE, University Stuttgart, Colloquium 95, Stuttgart, 10 November 1995.
Musílek, L., Čechák, T., Wolterbeek, H.Th., Verburg, T.: Biomonitoring Air Pollution Using Analysis of Tree Bark, CTU Prague and TU Brno Workshop 96, Brno, 22-24 January 1996.
Musílek, L., Čechák, T., Losinská, J., Wolterbeek, H.Th.: Biomonitorování území České republiky s využitím rentgenfluorescenční analýzy stromové kůry. 12.seminář Jaderné metody v hornictví, geologii, geofyzice, geochemii a v oblasti sledování životního prostředí. Mariánská u Jáchymova, 30 September .-3 October 1997.
Musílek, L., Čechák, T., Losinská, J., Wolterbeek, H.Th.: Biomonitoring air pollution in the Czech Republic by means of tree bark. BioMAP - International Workshop on Biomonitoring of Atmospheric Pollution, Lisbon (Portugal), 21-24 September 1997.
Böhm, P., Čechák, T., Musílek, L., Wolterbeek, H.Th.: Use of XRF analysis of tree bark for biomonitoring air pollution. European Conference on Energy Dispersive X-Ray Spectrometry. Bologna (Italy), 7-12 June 1998.
Böhm, P., Musílek, L., Čechák, T., Wolterbeek, H.Th.: Application of nuclear methods for air pollution monitoring using tree bark. Workshop CTU Prague, Prague 3-5 February 1998.
Böhm, P., Wolterbeek, H.Th., Verburg, T., Musílek, L.: The use of tree bark for environmental pollution monitoring in the Czech Republic. Environmental Pollution 102, 1998, 243-250.
Böhm, P. - Čechák, T. - Černá, L. - Musílek, L. - Thinová, L. - Wolterbeek, H.Th.: Environmental Pollution Monitoring in the Czech Republic Using X-ray Fluorescence Analysis of Tree Bark. In: Fifth International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe, CD-ROM Edition. Tallahassee : Florida State University, 2000, vol. 1, p. 180.
Musílek, L. - Čechák, T. - Wolterbeek, H.Th. - Losinská, J.: Biomonitoring Air Pollution in the Czech Republic by Means of Tree Bark. In: International Workshop on Biomonitoring of Atmospheric Pollution. Vienna: IAEA, 2000, vol. 1, p. 189-196

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Gamma Ray Dosimetry, in-situ Spectrometry in Environmental Monitoring and Radon Monitoring

Faculty of Nuclear Sciences and Physical Engineering
Department of Dosimetry and Application of Ionizing Radiation
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: kluson@br.fjfi.cvut.cz

Staff: J. Klusoň, T. Čechák, J. Gerndt, Z. Berka, L. Thinová

An important part of radiometric monitoring of the workplaces and/or the environment is photon field analysis and dosimetric quantities determination. These measurements are necessary in the vicinity of man-made sources as well as for identification of the natural radionuclides or artificial contaminants accumulating in the environment.
The method of scintillation spectrometry is based on the deconvolution of the experimental pulse height spectra, using the detection systems response matrixes calculated by Monte Carlo. The advantages of the deconvolution method are that absolute calibration and energy dependence corrections (both included in the matrixes) are not necessary and spectral distributions of calculated dosimetric quantities are available. This method was verified and tested in international intercomparison measurements and used for the study of natural background variations (including cosmic component), very low background measurements, monitoring of regions impacted by the uranium industry, workplaces and the neighbourhood of a nuclear power plant and spent fuel temporary storage, external doses in dwellings, etc. The method was used in monitoring the Semipalatinsk test site surroundings in the framework of the NATO grant "Semipalatinsk Radiological Assessment".
The conversion factors for the radionuclides concentration determination from the in-situ gamma spectra from semiconductor detectors were calculated using Monte Carlo codes. The developed method is used e.g. by dosimetry service of the Temelín nuclear power plant.
The group’s activities are also aimed at measuring radon concentration in the air and in water, potential alpha energy concentration of radon progeny and dose rate of gamma radiation including the interpretation of monitoring results in terms of recognized and recently implemented radiation protection quantities which can then be used to estimate the resulting risk corresponding to such exposures. The monitoring methods are based mainly on the use of pulse-type ionisation chambers, tissue equivalent scintillation detectors, Si surface barrier detectors and energy compensated GM counters.
The detector response modelling and mathematical methods of the spectrometry data processing were designed and applied also for airborne spectrometer in co-operation with Picodas Inc., Canada. This technique of environmental monitoring was successfully used in the frame of the project, supported by the Ministry of environment grant,. Further scientific contacts are with the IRD Prague, KFA Jülich, IPSN Paris and PTB Braunschweig.

List of Selected Publications and Conference Contributions:
Klusoň, J., Čechák, T.: Dosimetry of External Photon Fields Using Unfolding of Scintillation Gamma Spectrometry Data, Proceedings of International Workshop on Radiation Exposures by Nuclear Facilities, Portsmouth, 9-12 July, 1996, p. 369-379, ISBN 3-9805260-1-1.
Pernička, F., Klusoň, J.: Variations of Natural Radiation Background and their Effect on Detector Response. [RP]: Environ. Internat. 22, Suppl. 1 (1996), p. 85-91.
Hill, P., Hille, R., Bouisset, P., Calmet, D., Klusoň, J., Smogulov, S., Seysebaev, A.: Radiological Assessment of Long Term Effects at the Semipalatinsk Testsite. NATO-Semipalatinsk Project 1995/1996, Berichte des Forschungszentrums Jülich, JÜL - 3325 (ISSN 0366-0885) December 1996.
Čechák, T., Klusoň, J., Fajman, V.: Photon Field Analysis in the Spent Fuel Temporary Storage, Proc. of IRPA Regional Symp. on Rad. Protect. in Neighbouring Countries of Central Europe, Prague, Czech Republic, 8-12 September, 1997.
Bouisset, P., Calmet, D., Hill, P., Hille, R., Klusoň, J., Seisebaev, A., Smogulov, S.: General Aspects and Results of the NATO Semipalatinsk Project. In: Proceedings of IRPA Regional Symposium on Radiation Protection in Neighbouring Countries of Central Europe, Prague, Czech Republic, 8-12 September, 1997.
Čechák, T., Klusoň, J., Fajman, V.: Spent Fuel Temporary Storage Environmental Impact Assessment, IAEA-TECDOC-1089, July 1999, p. 409.
Čechák, T. - Klusoň, J.: Some Improvements of In-situ Gamma Spectrometry Data Processing. In: XXII. Days of Radiation Hygiene. Praque : National Radiation Protection Institute, 1999, vol. 1, p. 53-56.
Čechák, T. - Klusoň, J.: Gamma Field at the Spent Fuel Temporary Storageof the NPP Dukovany. In: XXII. Days of Radiation Hygiene. Praque : National Radiation Protection Institute, 1999, vol. 1, p. 18-23.
Sabol, J. - Berka, Z.: Study of Anomaly Levels of Radon and Terrestrial Gamma Radiation at Selected Locations in the Czech Republic. In: Proceedings of Workshop 99. Prague : CTU, 1999, vol. 3, p. 310.
Klusoň, J. - Čechák, T.: Methods of the Contamined Media Activity Measurements. In: 23th Days of Radiation Protection. Praha : ČVUT, FJFI, KDAIZ, 2000, vol. 1, p. 29.
Klusoň, J.: Environmental Monitoring and In-situ Gamma Spectrometry, ISRP-8 8th International Symposium on Radiation Physics, Prague, 5-9 June 2000.
Klusoň, J.: Monte Carlo Simulations of Photon Fields Characteristics for In-Situ Gamma Spektrometry Applications. In: Book of Abstracts . Advanced Monte Carlo on Radiation Physics, Particle Transport Simulation and Applications. MC 2000. Lisbon : Technical University Lisbon, 2000, vol. 1, p. 92.

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Microtron Laboratory

Faculty of Nuclear Sciences and Physical Engineering
Department of Dosimetry and Application of Ionizing Radiation
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: vognar@br.fjfi.cvut.cz

Staff: M. Vognar, Č. Šimáně
PhD student: D. Chvátil

The Microtron MT 25 of the laboratory delivers highly monoenergetic electrons with energy variable in 0.5 MeV or 1 MeV steps, covering thus the energy range from 6 to 24 MeV with maximum mean beam current up to 10 ?A. The electron beam is transported to three working stations. Monitoring of the beam is done by an induction pick up system, indicating simultaneously both the mean electron current and beam position.
The first working station is currently used for experimental verification and optimisation of 123I production in photonuclear reaction from 124Xe in the bremmsstrahlung beams from electron accelerators and for development of irradiation apparatus with high pressure gaseous xenon targets. Development and testing of other gaseous targets continues for irradiation in the proton beams at the cyclotron of the Nuclear Physics Institute of the Czech Academy of Sciences.
High energy gamma and electron fields suitable for testing dosimeters are generated in an installation at the second working station. Field sizes 10 x 10 cm2 are available, having homogeneity better than to 5 %, dose rates being up to hundreds Gy/min in the case of electrons and up to 5 Gy/min for gamma. Recently, the installation has been adapted for studies of optical behaviour during and after irradiation of scintillation monocrystals PbWO4. Irradiation modifications of electrical, optical and mechanical properties of other materials can be studied with dose rates up to 1 Gy/min in gamma and several tens Gy/min in electron fields.
At the third working station, neutrons are generated in photonuclear reactions in lead or uranium converters, delivering close to the converters high intensity (up to hundreds Gy/min) mixed gamma and neutron fields, currently used for study of radiation damage or radiation resistance especially of semiconductors, semiconductor devices or circuits.

List of Selected Publications and Conference Contributions:
Švorčík, V., Rybka, V., Hnatowitz, V., Novotná, M., Vognar, M.: Electron beam modification of polyethylene and polystyrene, J. Appl. Polym. Sci 64, 1997, pp. 2529-2533.
Vognar, M., Šimáně, Č.: Laboratory apparatus for preparation of 123I from124Xe by photonuclear reaction, ACTA POLYTECHNICA, Vol.36, No.5, 1996.
Sabol, J., Vognar, M.: Radiation protection characteristics of the microtron laboratory, XX.days of Radiation Hygiene, 1-4 December 1996, Jáchymov.
Vognar, M., Šimáně, Č., Chvátil, D.: Applications of nuclear methods in the microtron laboratory of the Faculty of Nuclear Sciences and Physical Engineering, Acta Polytechnica 1998.
Šimáně, Č., Vognar, M.: Induction pick up system for microtron MT25 current measuring and position indication, Proceedings of Workshop 98, 3-5 February, 1998, Prague.
Šimáně, Č., Vognar, M., Němec, V.: Absolute multiturn electromechanical encoder with mechanical cyclic code generator, Proceedings of Workshop 98, 3-5 February, 1998, Prague.
Vognar, M., Chvátil, D., Šimáně, Č.: Optimization of the iodine 123 production by photoreaction from xenon 124 on the microtron MT25, Proceedings of Workshop 98, 3-5 February, 1998, Prague.
Šulc, M., Vognar, M. et al.: PbWO4 crystal scintillators in gamma radiation field, International Workshop “Symmetry and Spin”, Prague, August 30.
Šimáně, Č.: Absolute Encoding of Positions and Turnings by Cyclic Successions. In: Jemná mechanika a optika. 1999, vol. 44, no. 7, p. 19- 54. ISSN 0447-6441. (in Czech).
Šimáně, Č. - Vognar, M. - Chvátil, D.: The Study of PbWO4 Crystal Scintillators Sensitivity to Gamma and Neutron Irradiation. In: Czechoslovak Journal of Physics. 1999, vol. 49/S2, no. 49, p. 183-188. ISSN 0011-4626.
Vognar, M. - Šimáně, Č. - et al.: Scintilating and Light Guide Fibers in Gamma Radiation Field. In: Czechoslovak Journal of Physics. 2000, vol. 50, no. 1, p.387-96. ISSN 0011-4626.
Chvátil, D. - Šimáně, Č. - Vognar, M. - Belov, A.: Electron and Gamma Brehmsstrahlung Beams of JINR and CTU Microtrons. In: Czechoslovak Journal of Physics. 2000, vol. 50, no. 1, p. 385-386. ISSN 0011-4626.
Šimáně, Č. - Vognar, M.: A Intermediate Container for Cryogenic Gas Filling Containers under Pressure. Patent Office of Industrial Ownership, PV 2796-99. 05.08.1999. (in Czech).
Vognar, M. - Šimáně, Č. - Chvátil, D.: Some Medical Applications of the Microtron. In: XXII. Days of Radiation Hygiene. Praque : National Radiation Protection Institute, 1999, vol.1, p.117-20.
Vognar, M. - Šimáně, Č.: Arrangement for Study of Radiation Induced Changes in Materials Used in Detectors of Ionizing Radiation. In: Proceedings of Workshop 99.
Prague : CTU, 1999, vol. 3, p. 298.
Vognar, M. - Němec, V. - Šimáně, Č.: Stabilisation of Microtron Electron Beam Position. In: Proceedings of Workshop 2000. Prague :CTU, 2000, vol.B, p.540. ISBN 80-01-02229-3.

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X-Ray Fluorescence Analysis

Faculty of Nuclear Sciences and Physical Engineering
Department of Dosimetry and Application of Ionizing Radiation
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: cechak@br.fjfi.cvut.cz

Staff: T. Čechák, J. Gerndt, J. Klusoň, J. Losinská, L. Thinová
Students: T. Trojek, V. Štýsová

X-Ray Fluorescence Analysis and other nuclear non-destructive analytical techniques, e. g. backscattering of gamma rays, are used to measure the concentrations of a variety of elements in samples for the coal industry, mining and environmental research.

The research activities of the group cover mainly:

  • creation of special software for industrial application of XRF; using microcomputers in one-purpose analysers enables the use of mathematical methods for eliminating the matrix effects and also controlling the whole measuring cycle
  • improvement of existing measurement devices
  • measurement of the concentration of selected elements for the coal industry, mainly sulphur and arsenic content, and ash content in the coal
  • tree bark and lichens are used as biomonitors of selected elements, the concentration of many elements is measured by X-Ray Fluorescence Analysis
  • following the trace elements in human tissues e.g. in thyroid
  • measurement of composition and trace elements in colours on pictures and wooden sculptures and materials of various artifacts seeking to obtain information about the historic period of origin of these objects

Experimental equipment:
  • transportable XRF device with Si(Li) detector and MCA DART ORTEC
  • XRF devices with Si(Li) detectors and proportional counters.

List of Selected Publications and Conference Contributions:
Čechák, T. - Šimon, L. - Hally, J.: The Application of the Microcomputers in the X-ray Fluorescent Analysis, 30th Hungarian Annual Conference on Spectral Analysis, Debrecen 1987.
Rabatin, J. - Šimon, L. - Čechák, T.:Radionuklidová rentgenofluorescenční analýza v hornictví a příbuzných oborech. Praha : Ústav jaderných informací, 1989.
Čechák, T. - Šimon, L. - Koč, Z.: Application of X-Ray Fluorescence Analysis in the Coal Quality Monitoring. 11th Seminar Nuclear Methods Mining, Geology, Geophysics, Geochemistry and in Environmental Monitoring, Mariánská u Jáchymova, CTU Prague, 1995.
Musílek, L. - Čechák, T. - Richter, V. - Wolterbeek, H.Th. - Verburg, T.: Radioanalytical methods in monitoring ecological impact of coal burning for power production. EPS 10 Trends in Physics - 10th General Conference of the European Physical Society. Sevilla (Spain), 9-13 September 1996.
Musílek, L. - Čechák, T. - Baimolda, D. - Wolterbeek, H.Th. - Verburg, T.: XRFA in monitoring impact of coal burning. 7th Int. Symp. Radiation Physics. Jaipur (India), 24-28 February 1997.
Musílek, L. - Čechák, T. - Wolterbeek, H.Th. - Verburg, T.: X-ray fluorescence in measurement of environmental impact of coal burning. Workshop CTU Prague, TU Brno and TU Ostrava, Praha 20.-22.1.1997.
Čechák, T.: X-Ray fluorescence techniques in Czech coal industry. European Conference on Energy Dispersive X-Ray Spectrometry, June 1998, 147.
Musílek, L. - Čechák, T. - Baimolda, D. - Wolterbeek, H.Th. - Verburg, T.:XRFA in monitoring impact of coal burning. Radiation Physics and Chemistry 51, 1998, p.627.
Musílek, L. - Čechák, T. - Losinská, J. - Černá, L.: X-Ray Fluorescence Analysis of Paintings. In: Proceedings of Workshop 99. Prague : CTU,1999, vol. 3, p. 312.
Čechák, T. - Thinová, L.: Sulphur Content Measurement in Coal by X-Ray Fluorescence Method. In: 8th International Symposium on Radiation Physics. Prague : CTU, 2000, vol. 1, p. 113. ISBN 80-01-02180-7.
Čechák, T. - Gerndt, J. - Musílek, L. - Kopecká, I.: Application of X- Ray Fluorescence for Analysis of Fresco Paintings. In: European Conference on Energy Dispersive X-Ray Spectrometry. Krakow : FAST PLK, 2000, vol. 1, p. 167-169.

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Laboratory of Quantitative Methods in Research of Ancient Monuments

Faculty of Nuclear Sciences and Physical Engineering
Department of Dosimetry and Application of Ionizing Radiation
Břehová 7, 115 19 Prague 1, Czech Republic
Tel: +420 2 2231 9610, Fax: 2232 0861,
email: musilek@br.fjfi.cvut.cz

Staff: L. Musílek, T. Čechák, M. Kubelík, L. Černá, J.Gerndt, A. Daříčková, V. Spěváček, J. Losinská
Collaborators from other Faculties of CTU: M. Pavlík, K. Pavelka,
R. Jurášková
Students: V. Novotná, P. Průša, D. Marmange

The Laboratory of Quantitative Methods in Research of Ancient Monuments is being built and operated with the collaboration of specialists from the Faculty of Architecture and the Faculty of Civil Engineering of the CTU Prague. The primary orientation is the investigation of historic architecture, although other objects of art can also be investigated. While the laboratory is under construction three methods are being established, namely thermoluminescence dating, X-ray fluorescence analysis and photogrammetry, but the laboratory is set up so that various other methods can be added in the future development.
An automated TL-Reader was designed and built in co-operation with members of the Faculty of Mechanical Engineering. The design is adjusted for the purpose of dating historic brick architecture (which, of course, does not exclude application for ceramics and other materials). It takes into consideration the need for statistical evaluation of multiple samples from a single brick and irradiation of the samples by a test dose. The brick architecture in the Czech Republic from antiquity to Baroque provides unique opportunities to use this dating method.
Radionuclide X-ray fluorescence analysis has been chosen as the basic analytical method in the laboratory. Measurements in situ are also possible. Collaboration with IRI TU Delft in activation analysis has been prepared. The possibility of analysing old manuscripts, paintings and frescoes has been tested. Moreover, in relation to dating brick, the preliminary studies of brick analyses seeking to recognise their origin have been carried out.
Photogrammetric investigations are orientated to architectural artefacts as vaults or facades. The laboratory is equipped by the system Rolleimetric CDW. The first tests have been carried out in the church of Our Lady and Charlemagne in Prague, Karlov. The analysis of the largest Gothic vault in Central Europe, i.e., the Vladislav Hall in Prague Castle, is in progress. This research is carried out in collaboration with the members of the two Faculties mentioned above.

Project supported by grant:
Musílek, L.: Laboratory of Quantitative Methods in Research of Historical Monuments, VS 96 052 (1996-2000), from 2001 in the Research Plan MSM 210000019.

List of Selected Publications and Conference Contributions:
Dynybyl, V., Gerndt, J., Kanaval, J., Kubelík, M., Musílek, L., Pavlík, M., Zýma, J.: Thermoluminescence reader for dating of brick structures. 7th Int. Symp. Radiation Physics. Jaipur (India), 24-28 February 1997. Radiation Physics and Chemistry 51, 1998, pp. 715-16.
Kubelík, M., Musílek, L., Pavlík, M.: Exaktní metody při studiu památek. In: Regenerace historických budov, sídel a krajiny, ochrana památek (M.Pavlík a kolektiv), Prague, Vyd. ČVUT 1998, pp. 88-95.
Dynybyl, V., Gerndt, J., Kanaval, J., Kubelík, M., Musílek, L., Zýma, J.: Zařízení pro termoluminiscenční určování stáří architektonických objektů. TRANSFER 98 (Celostátní konference technických universit a průmyslu), Prague, 8-10 June 1998.
Čechák, T., Kubelík, M., Musílek, L.: Ionizující záření při výzkumu uměleckých a architektonických památek. NUKLEONIKA 98 (vědecká konference jaderných oborů), Prague, 9-10 September 1998.
Musílek, L. - Čechák, T. - Losinská, J. - Černá, L.: X-Ray Fluorescence Analysis of Paintings. In: Proceedings of Workshop 99. Prague: CTU, 1999, vol. 3, p. 312.
T.Čechák-M.Kubelík-L.Musílek-M.Pavlík: Radiation Physics in Research of Ancient Monuments. 11th Congress of Radiation Research, Dublin (Ireland), 18-23 July 1999.
T.Čechák-J.Gerndt-M.Kubelík-L.Musílek: Thermoluminescence reader for dating of brick structures. LED99 - 9th International Conference on Luminescence and Electron Spin Resonance Dating, Rome (Italy), 6-10 September 1999.
T.Čechák-M.Kubelík-L.Musílek-M.Pavlík: The Laboratory of Quantitative Methods in the Research of Ancient Monuments in Prague. Colloquy „Preservation of Cultural Heritage: A Glance towards theXXIst Century“, Council of Europe, Strasbourg, 23-24 September 1999.
L.Musílek-M.Kubelík: Thermoluminescence Dating. In: Radiation in Art and Archeometry (ed. by D.C.Creagh and D.A.Bradley), Amsterdam, Elsevier 2000, p. 101-128.
T.Čechák-J.Gerndt-L.Musílek-I.Kopecká: Analysis of fresco paintings by X-ray fluorescence method. 8th International Symposium on Radiation Physics, Prague (Czech Republic), 5-9 June 2000.
Musílek-T.Čechák-M.Kubelík-K.Pavelka-M.Pavlík: The Laboratory of Quantitative Methods in Historic Monument Research at the CTU Prague. 8th International Symposium on Radiation Physics, Prague (Czech Republic), 5-9 June 2000.
T.Čechák-J.Gerndt-P.Hiršl-P.Jiroušek-J.Kanaval-M.Kubelík-L.Musílek: Automation of TL brick dating by ADAM-1. 8th International Symposium on Radiation Physics, Prague (Czech Republic), 5-9 June 2000.
V.Novotná-M.Kubelík-L.Musílek: Program for the evaluation of TL-brick dating: „ADAM-1-EVA. 8th International Symposium on Radiation Physics, Prague (Czech Republic), 5-9 June 2000.

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Department of Nuclear Reactors
Training and Experimental Reactor VH-1


Training and Experimental Reactor VR-1
Staff: K. Matějka, J. Bouda, A. Kolros, M. Kropík, Ľ.Sklenka, J. Zeman
PhD student: J. Rataj

Reactor VR-1 has been in operation since December 1990. It is a zero power nuclear reactor (thermal power 1kW) and it is mainly used for training and education. In the first three years of operation many training experiments orientated to these areas were developed:
• study of neutron detectors properties
• reactivity measurements
• study of zero power reactor dynamics
• delay neutron parameters measurement
• influence of changes in the core to the reactivity (simulation of boiling, influence of inserted fuel pins and absorbers)
• basic critical experiment
• demonstration of neutron activation analysis

There are more experiments in the development stage and these are used for:
• education of students from the Czech Technical University and other universities
• training of nuclear power plant staff

In addition to standard training of students, a research programme in neutron noise analysis, and digital control systems is carried out. An increase of the thermal power up to 10kW is planned which will extend the possibilities for neutron activation analysis.
Reactor VR-1 also contributes a great deal to educating the general public on the importance, physical and technical principles and safety problems of nuclear power engineering.

Projects supported by grants:
  Matejka, K: Innovation of Study Programmes on reactor VR-1 Caused by the Fuel Replacement. The grant of the Universities Development Fund of the Czech Republic No. 1063/97
  Matějka, K.: Modernization and Partial Workplace Extension of the VR-1 Training Reactor. The grant of the Universities Development Fund of the Czech Republic No. 1269/98


List of Selected Publications and Conference Contributions:
Matějka, K., et al.: Operational characteristics and conditions of the training reactor VR-1, Bezpečnost jaderné energie 2, 1994 , 7/8, p. 179.

Matějka, K., et al.: Utilization of the training reactor VR-1, Bezpečnost jaderné energie 2, 1994, p. 279.
Text book and question sets for preparation and tests of selected staff members of experimental nuclear facilities.

Matějka, K.: Education and research at training reactor VR-1, habilitační práce, CTU Praha 1993.
Preparation, and results of the experiment to test possibilities of reactor VR-1 power increase, Dept. of Nuclear Reactors, FNSFE, CTU Prague 1995.

Matějka, K. a kol.: Souhrnný podklad žádosti o souhlas SÚJB s pokračováním trvalého provozu školního reaktoru VR-1 VRABEC: Výzkumná zpráva, Prague, ČVUT FJFI, 1994.

Matějka, K., Kolros, A., Kropík, M., Polách, S., Sklenka, Ľ, Šejba, T.: Příprava provozu školního reaktoru VR-1 VRABEC na výkonu 5E8 : Výzkumná zpráva. - Prague: ČVUT FJFI, 1995.

Matějka, K. a kol. : Bezpečnostní zpráva školního reaktoru VR-1 VRABEC, Souhrnná výzkumná zpráva. - Prague: ČVUT FJFI, 1995.

Matějka, K., Polách, S., Sklenka, Ľ., Zeman, J.: Systém zajištění jakosti při provozu školního reaktoru VR-1: Výzkumná zpráva, Prague, ČVUT FJFI, 1995.

Matějka, K., Polách, S., Zeman, J. : Osnovy pro přípravu vybraných pracovníků výzkumného jaderného zařízení "Školní reaktor VR-1 VRABEC", Výukový podklad, Prague, ČVUT FJFI, 1995.

Matějka, K. - Sklenka, L. - Kolros, A.: Experimentální a teoretické výsledky získané při provozu výzkumného reaktoru VR-1 VRABEC, [Výzkumná zpráva]. Praha : ČVUT, FJFI, Katedra jaderných reaktorů, 2000. 1. 29 s.
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Computer Control of Nuclear Facilities
Staff: M.Kropík, K.Matějka, Ľ.Sklenka
PhD students: M. Juříčková, V. Juříček, R. Chudý
Tel: +420 2 688 1075, Fax: 688 0764 , e-mail:
kropik@troja.fjfi.cvut.cz

The Group deals with hardware and software computer control of nuclear facilities:
• design and construction of high safety computer control system for VR-1 training nuclear reactor, based on multicomputer structure
• creation of software for VR-1 training nuclear reactor control systems
• improvement of temporary existing hardware and software systems
• development of new multicomputer control systems for research reactors using up-to-date components and tools, e.g. fibre optics, high performance microcomputers, high level languages
• neutron noise analysis for purposes of reactor control
• studying of aspects of computer control and safety systems and software reliability for ensuring nuclear safety
• solving problems of quality assurance (QA) hardware and software of the control and safety systems of nuclear facilities
• verification and validation (V&V) activities
• technical support for the State Office for Nuclear Safety concerning the licensing process

Projects supported by grants:
  Matějka, K: Quality Control for Development of High Reliable Software. Ministry of Education's grant No. VS97037.
  Kropík, M: Neutron Noise Analysis. CTU grant No. 309811904.

List of Selected Publications and Conference Contributions:
Kropík, M., Fleischhans, J., Hiršl, P., Matějka, K., Šejba, T., Lněnička, B.: Control and Safety System of Training Reactor VR-1 'Sparrow' on the FNSPE CTU, Bezpečnost jaderné energie journal, 1 (39), 1993, Nr.6.

Matějka, K., Kropík, M., Šejba, T.: Expert Assessment of Westinghouse Document "Verification and Validation Plan - Topical Report" FNSPE CTU Prague, 1994.

Matějka K., Kropík, M., Šejba, T.: Expert Assessment of Westinghouse Document "Control Room NPP Temelín - Topical Report" FNSPE CTU Prague, 1994.

Matějka, K., Kropík, M., Šejba, T.: Improvement of Control and Safety System of Training Reactor VR-1 (technical information), FNSPE CTU Prague, 1994.

Matějka,K., Kropík, M.,Šejba, T.: Quality Assurance of Software for Control Systems of Nuclear Power Plants, FNSPE CTU Prague, 1994.

Matějka, K., Kropík, M., Šejba, T.: Software Reliability Aspects in Digital Control Systems of Nuclear Reactors, CTU Workshop 95, 1995.

Matějka, K., Kropík, M., Šejba, T.: Plán zajištění jakosti inovovaného ovládacího zařízení školního reaktoru VR-1, Výzkumná zpráva, Prague, ČVUT FJFI, 1995.

Matějka, K., Kropík, M., Šejba, T.: Plán verifikace a validace inovovaného ovládacího zařízení školního reaktoru VR-1, Výzkumná zpráva, Prague, ČVUT FJFI, 1995.

Matějka, K., Kropík, M., Šejba, T.: Quality Assurance of Hardware for Control Systems of Nuclear Power Plants, FNSFE, CTU Prague 1995.

Kropík, M., Kropš, S., Matějka, K., Böck,H.: Comparison of the time-related behavior of analogue and digital reactor safety systems, KERNTECHNIK 63 (1998).

Kropík, M., Matějka, K., Juříčková, M.: Quality Assurance of the Safety System of the Nuclear Device, CTU Prague, Workshop 98, sect. 10, pp. 711-712.

Juříčková, M., Kropík, M.: Development of Software for the Independent Power Limiting Subsystem of Nuclear Reactor VR-1, CTU Prague, Workshop 98, sect. 10, pp. 713-714.

Kropík, M., Matějka, K., Juříčková, M.: Software for the Research Reactor Safety System, Enlarged Halden Programme Group Meeting, Contribution, Lillehammer, Norway, March 1998.

Kropík, M., Kropš, S., Matějka, K., Böck, H.: Porovnání časové odezvy analogových a číslicových bezpečnostních systémů, Svět energetiky, 10/1998.

Matějka, K. - Kropík, M. - Kobylka, D.: Digitální vzdělávací pracoviště SIMUL 440 [Výzkumná zpráva]. Praha : ČVUT, Fakulta jaderná a fyzikálně inženýrská, Katedra jaderných reaktorů, 2000
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Accelerator Driven Systems
Staff: J.Zeman, K.Matějka, B.Heřmanský, R. Hejzlar
PhD student: K. Tuček, M. Mikisek, J. Křepel, D. Kobylka, K. Katovský
Tel: +420 2 688 1075, Fax: 688 0764 , e-mail:
zeman@troja.fjfi.cvut.cz

Recently the idea of using the accelerator in nuclear facilities for disposing of nuclear waste has returned. As there exists no satisfactory solution to this problem in our Republic and this method of radioactive waste disposal seems convenient from the point of view of both economy and power engineering, the importance of these projects is increasing in some institutions.
Attention to the problem is also paid at the Department of Nuclear Reactors.

The Group deals with the study of using the accelerator in nuclear facilities:
• using accelerator driven systems (ADS) for disposing of nuclear waste
• calculation of subcritical systems with neutrons from the fission and neutrons produced by spallation reaction, when highly energetic protons from the efficient accelerator hit the target system

Projects supported by grants:
 Zeman, J: Study of spent nuclear fuel and radioactive waste management by use of accelerator driven reactor systems. CTU No. 10048297
 Heřmanský, B.: Safety problems of accelerator driven transmutation technologies. The grant of the Universities Development Fund of Czech Republic No. 1264/98
 Tuček, K. : Atypical reactor systems for transmutation technology waste, CTU No. 3907501
 Matějka, K.: Development of new Technologies of Nuclear combustion of the burn-up fuel Radioactive waste from operation of the nuclear power plants with reactors VVER. The grant of the Ministry of Industry and Trade of Czech Republic No. 4000/10/98
 Tuček, K.: Transmutation Aspects of Reactor Systems Dedicated to the Destruction of Spent Nuclear Fuel . CTU grant No.309812004
 Zeman, J: Physics and safety of the transmutation systems. The grant of the Universities Development Fund of Czech Republic No. 829/99

List of Selected Publications and Conference Contributions:
Tuček, K.: RA waste disposal using particle accelerators for radionuclides transmutation, Dept. of Nuclear Reactors, FNSFE, CTU Prague 1994.

Zeman, J., Hron, M., Tuček, K., Heřmanský B., Pospíšil, S., Kubašta, J., Mikisek, M.: Study of Spent Nuclear Fuel and Radioactive Waste Management by Use of Accelerator Driven Reactor Systems, Research Report, FNSFE, CTU Prague 1995.

Hron, M., Tuček, K.: Předběžný projektový návrh experimentálního souboru LA-0 pro testování neutroniky AZ urychlovačem řízeného transmutátoru a připojené technologie, výzkumná zpráva ÚJV Řež, 1995.

Zeman, J., Hron, M., Tuček, K., Mikisek M.: Accelerator driven Reactors in radioactive waste and spent fuel management, Acta Polytechnica, Czech Technical University in Prague, Vol.37, No.1/1997.

Matějka, K., Zeman, J.: Časové chování LA-0 jako podkritické násobící soustavy s vnějším zdrojem neutronů, příspěvek na odborné konferenci Transmutory pro jaderné spalování vyhořelého paliva z konvenčních reaktorů, Liblice, 14.-15 April 1997.

Matějka, K., Zeman, J.: Příprava odborníků pro transmutační technologie (ADS), příspěvek na odborné konferenci Transmutory pro jaderné spalování vyhořelého paliva a radioaktivního odpadu z provozu reaktorů typu VVER, Liblice 11-12 May 1998.

Bém, P., Hron, M., Matějka, K., Peka, I., Valenta, V., Uhlíř, I.: Nové technologie pro jaderné spalování vyhořelého paliva z reaktorů typu VVER, předběžný návrh výzkumného projektu TRANSMUTACE, ÚJV Řež, a.s., July 1998.

Mikisek, M.: Transmutační systémy založené na podkritických jaderných reaktorech řízených vnějším neutronovým zdrojem, diplomová práce KJR-FJFI-ČVUT, Prague, 1998.

Matějka, K., Zeman, J., Sklenka, Ľ., Kolros, A., Bouda, J., Katovský, K., Křepel, J., Kobylka, D., Mikisek, M., Rataj, J., Tuček, K., Uher, J.: Modelové ověření chování podkritického systému s vnějším zdrojem, Výzkumná zpráva KJR FJFI ČVUT, Praha, prosinec 1999.

Matějka, K., Zeman, J., Křepel, J., Rataj, J., Rutová, H., Uher, J.: Modelové ověření chování podkritického systému s vnějším zdrojem, Výzkumná zpráva KJR FJFI ČVUT, Praha, prosinec 2000.
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Impact of Nuclear Energy Utilization on the Environment
Staff: A.Kolros, K.Matějka, Ľ.Sklenka, J.Bouda
Tel: +420 2 688 1075, Fax: 688 0764 , e-mail:
kolros@troja.fjfi.cvut.cz

At present radioactive waste management (especially spent fuel elements utilization) and ionizing radiation protection are at the center of research activities in the nuclear energy utilization.

In the area of radioactive waste management the group is concerned with:
• spent fuel elements behaviour in interim fuel storage (calculations of isotope content, heat generation, radioactivity of fission products and actinides etc.)
• final repository for spent fuel elements
• safety analysis

Ionizing radiation protection covers a wide range of environmental aims:
• continuous gamma dose rate monitoring around the training reactor VR-1 (radioactive leakage monitoring in the case of a nuclear accident)
• thermoluminescence dosimetry for personal and environmental monitoring
• gama spectroscopy on an HPGe-detector

Neutron activation analyses are also performed within the framework of the group’s activities.

Projects supported by grants:
  Matějka, K. et. al. : Upgrading of the FNSPE Laboratories for Education and Training of the Selected Analytical Methods for the Monitoring of the Environment, The grant of the Universities Development Fund of Czech Republic No. 0223/96.

List of Selected Publications and Conference Contributions:
Matějka, K. a kol.: Bezpečnostní zpráva školního reaktoru VR-1 VRABEC : Souhrnná výzkumná zpráva, Praha, ČVUT FJFI, 1996.

Matějka, K., Kolros, A., Kropík, M., Sklenka, Ľ.: VR-1 Reactor Description Principles of the Nuclear Safety Reactor Experiments, Research Report, KJR FJFI, Prague, May 1997.

Matějka, K., Zeman, J.: Časové chování LA-0 jako podkritické násobící soustavy s vnějším zdrojem neutronů, příspěvek pro odbornou konferenci Transmutory pro jaderné spalování vyhořelého paliva z konvenčních reaktorů, Liblice,14-15 April 1997.

Matějka, K., Sklenka, Ľ.: Odborné posouzení a zhodnocení vybraných částí dokumentace transportního kontejneru MCC-5, zpráva pro SÚJB, KJR FJFI, Prague, October 1997.

Matějka, K., Kolros, A., Janout, Z., John, J., Král, J., Čechák, T., Beneš, P., Pospíšil,S., Spěváček,V.: Vybrané analytické metody pro sledování životního prostředí, skriptum ČVUT, Prague, January 1998.

Matějka, K. - Kolros, A. - Bouda, J.: Cooperation of the VR-1 Reactor and IBR-2 Reactor In: Proceedings of Workshop 99. Prague : CTU, 1999, p. 313. ČVUT: Fakulta jaderná a fyzikálně inženýrská, Katedra jaderných reaktorů 1999

Matějka, K. - Kolros, A.: Selected Radioanalytical Methods for the Monitoring Environment in Czech Technical University in Prague ,In: Monitoring of Natural and Man-Made Radionuclides and Heavy Metal Waste in Environment. Dubna : Joint Institute for Nuclear Research, 1999, p. 66. ISBN 5-85165-546-1.

Matějka, K. - Sklenka, L.: Výpočet a zhodnocení podkritičnosti jaderného zařízení SSHR č. 108 a jaderných materiálů v něm uložených, [Výzkumná zpráva]. Praha : ČVUT, Fakulta jaderná a fyzikálně inženýrská, Katedra jaderných reaktorů, 2000
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Training Laboratory for Simulation of the NPPs Operation

Staff: K.Matějka, M. Kropík, J.Zeman, Ľ.Sklenka
PhD students: J.Molnár, A. Zíb, D. Kobylka
Tel: +420 2 688 1075, Fax: 688 0764 , e-mail:
matej@troja.fjfi.cvut.cz

This laboratory provides a training simulator for the VVER nuclear power plants (NPPs) operation. Simulator exercises enhance the possibilities of educational utilization of the VR-1 workplace. The simulator is based on personal computers with appropriate software delivered by NPP Dukovany. The computers are connected by a high-speed network. The laboratory is now under construction.

List of intended exercises:
• simulation of the start-up of the NPP
• long-term simulation of the NPP with constant power
• simulation of the dynamic behavior
• simulation of the control actions of the control system
• simulation of the safety actions during transient process

List of Selected Publications and Conference Contributions:
Heřmanský, B., Zeman, J.: Computer Aided Education in Nuclear Energy. Research Report, FJFI, Prague, 1993.

Heřmanský, B.: Modular system of educational computer programs "Energy sources of the Earth". In: CTU "Workshop 95", Prague, 23-26 January 1995, Part III, p. 851.

Matějka, K.: Training Reactor VR-1 and its Use in Education and in Preparation of Specialists in the Field on Nuclear Engineering, IAEA-SR-014, Bombay, March 1996.

Polách, S., Matějka, K.: Education of Students and Experts and Personnel Preparation on Training Reactor VR-1. Proceedings of an ENS Class 1 Topical Meeting, Brussel, Belgium, 4-6 June, 1996, p.113-119.

Matějka, K., Kolros, A., Kropík, M., Sklenka, Ľ.: VR-1 Reactor Description Principles of the Nuclear Safety Reactor Experiments, Research Report, KJR FJFI, Prague May 1997.

Matějka, K., Kolros, A., Kropík, M., Sklenka, Ľ.: Praktická cvičení na reaktoru VR-1 Vrabec pro přípravu specialistů JE, ČEZ a.s. 1997, druhé upravené vydání.

Matějka, K. - Kropík, M. - Kobylka, D.: Digitální vzdělávací pracoviště SIMUL 440 [Výzkumná zpráva]. Praha : ČVUT, FJFI, KJR, 2000

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Nuclear Safety Improvement during NPPs Operation of VVER type

Staff: K. Matějka, J. Zeman, M. Kropík, Ľ. Sklenka, A. Kolros, R. Hejzlar, J. Bouda
PhD student: J. Bajgl, D. Burket, J. Molnár, R. Škoda, L. Vodvářková, A. Zíb, J. Škop, D. Kobylka
Tel: +420 2 688 1075, Fax: 688 0764 , e-mail:
matej@troja.fjfi.cvut.cz

Safe utilisation of nuclear power plants (NPPs) and safe operation of nuclear devices are achieved by adherence to strict requirements: nuclear safety, radiation protection and radioactive waste treatment. Requirements for nuclear safety and radiation protection are increasing and can be accomplished only by using the most up-to-date information, improved measuring methods, etc. These new approaches are expressed in general terms by quality assurance and safety culture.

The Department of Nuclear Reactors successfully operates training reactor VR-1, which is used by the Ministry for Education of the Czech Republic. This department has practical experience with fundamental aspects of the nuclear energy usage.

The research is based on long-term plans for educational and research activities of the Department of Nuclear Reactors and reflects up-to-date developments and demands in the Czech Republic.

Main topics:
• safe operation of NPPs (neutron, thermohydraulic calculations, reactor dynamics, accident analysis, reliability assessment, etc.)
• system assessment of nuclear safety
• fuel cycle optimisation of VVER-440 and VVER-1000
• electronic systems for nuclear technology
• economic assessment of NPPs, comparison with alternative resources
• shielding and radiation protection
• quality assurance by the utilisation of NPPs
• spent fuel recycling, transmutation technologies
• materials used in NPPs
• operation and utilisation of the VR-1 training reactor

Projects supported by grants:
  K. Matějka: Nuclear installations, nuclear safety and radiation protection CEZ:J04/98:210000020

List of Selected Publications and Conference Contributions:
Zeman, J., Hron, M., Tuček, K., Mikisek M.: Accelerator driven Reactors in radioactive waste and spent fuel management, Acta Polytechnica, Czech Technical University in Prague, Vol.37, No.1/1997.

Matějka, K., Zeman, J.: Časové chování LA-0 jako podkritické násobící soustavy s vnějším zdrojem neutronů, příspěvek na odborné konferenci Transmutory pro jaderné spalování vyhořelého paliva z konvenčních reaktorů, Liblice,14-15 April 1997.

Matějka, K., Zeman, J.: Příprava odborníků pro transmutační technologie (ADS), příspěvek na odborné konferenci Transmutory pro jaderné spalování vyhořelého paliva a radioaktivního odpadu z provozu reaktorů typu VVER, Liblice 11-12 May 1998.

Kropík, M., Kropš, S., Matějka, K., Böck, H.: Comparison of the time-related behavior of analogue and digital reactor safety systems, KERNTECHNIK 63 (1998).

Kropík, M.,Matějka, K., Juříčková, M.: Quality Assurance of the Safety System of the Nuclear Device, CTU Prague, Workshop 98, sect. 10, pp. 711-712.

Kropík, M.: Utilizing the Campbell Technique for Neutron Flux Measurement, CTU Prague, Workshop 98, sect. 10, pp. 715-716.

Juříčková, M., Kropík, M.: Development of Software for the Independent Power Limiting Subsystem of Nuclear Reactor VR-1, CTU Prague, Workshop 98, sect. 10, pp. 713-714.

Kropík, M., Matějka, K., Juříčková, M.: Software for the Research Reactor Safety System, Enlarged Halden Programme Group Meeting, Contribution, Lillehammer, Norway, March 1998.

Kropík, M.: Safety Systems and Other Systems of Nuclear Devices, IAEA Training Programme, Řež, Czech Republic, October 1998.

Matějka, K., Kropík, M: Training Reactor VR-1Technical Visit and Reactor Experiments, IAEA Training Programme, Řež, Czech Republic, October 1998.

Kropík, M., Kropš, S., Matějka,K., Böck, H.: Porovnání časové odezvy analogových a číslicových bezpečnostních systémů, Svět energetiky, 10/1998.

Matějka, K. - Kropík, M. - Kobylka, D.: Digitální vzdělávací pracoviště SIMUL 440 [Výzkumná zpráva]. Praha : ČVUT, FJFI, KJR, 2000

Matějka, K. - Zeman, J. - Kobylka, D. - Zíb, A. - Hejzlar, R.: Porovnání různých typů AZ a paliva z hlediska požadavků EUR na bezpečnost nově projektovaných jaderných reaktorů, [Výzkumná zpráva]. Praha : ČVUT, FJFI, KJR, 2000

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