A5035835111- Radiation Therapy and Dosimetry
- Radioactivity and Radon Measurements
- Radiation Dose and Imaging
- Medical Imaging Techniques and Applications
- Advanced Radiotherapy Techniques
- Radiation Detection and Scintillator Technologies
- Radioactive contamination and transfer
- Graphite, nuclear technology, radiation studies
- Lichen and fungal ecology
- Radiation Effects and Dosimetry
- Advanced X-ray and CT Imaging
- Nuclear Physics and Applications
- Carcinogens and Genotoxicity Assessment
- Radioactive Decay and Measurement Techniques
National Radiation Protection Institute
2013-2021
Czech Technical University in Prague
2015-2016
This paper reports on results of activity mass concentration analyses performed in various forest mushrooms the Czech Republic within 1986 and 2011. The estimated effective half-life 137Cs its environmental (i.e. minus effect physical decay) were found to be 5.6±0.6 6.9±0.7 y, respectively. Non-homogeneity surface contamination over country's territory fungus species-based accumulation capacity then account for a span up 4 orders magnitude concentrations measured each year after Chernobyl...
This paper summarizes the results of an intercomparison on use ICRP Reference Computational Phantoms with radiation transport codes, which was organized by EURADOS working group 6. Three exercises are described: exposure to anterior-posterior (AP) photon point source, AP neutron and two typical medical X-ray examinations. The three received 17, 8 solutions, respectively. Participants originated from fifteen different countries, used a wide range Monte Carlo codes. Due difficulties in...
EURADOS Working Group 6 has organized an intercomparison exercise on the use of ICRP Reference Computational Phantoms with radiation transport codes. This paper summarizes results a specific task from modelling internal sources. The quantities to be calculated were absorbed fractions and for monoenergetic photon electron sources as well S-values two radionuclides in four source organs. Twelve participants eleven countries participated this using Monte Carlo codes FLUKA, Geant4, MCNP code...
Rapid measurement techniques are required for a large-scale emergency monitoring of people. In vivo the bremsstrahlung radiation produced by incorporated pure-beta emitters can offer rapid technique determination such radionuclides in human body. This work presents method calibration spectrometers, based on use UPh-02T (so-called IGOR) phantom and specific (90)Sr/(90)Y sources, which account recent as well previous contaminations. The process whole- partial-body counter combination with...
This work is focused on numerical calibrations of the body counter for in vivo measurement pure beta emitters through produced bremsstrahlung radiation. Calibrations were performed using UPh-02T block whole-body phantom and Lawrence Livermore National Laboratory (LLNL) realistic torso phantom. Neither these physical phantoms appropriate such calibrations; therefore, specific 90Sr sources have been manufactured to be used with experimental followed Monte Carlo (MC) simulations. LLNL carried...
The article deals with evaluation of irradiation an operator a 1 MW biogas station (BGS), processing silage plant biomass contaminated by 137Cs and 134Cs. External internal the means aerosol particles inhalation were considered. For calculation external irradiation, BGS model was created in MCNP. calculated total committed effective doses received during annual handling kBq per kg or 134Cs 34 69 μSv, respectively. Three scenarios contamination evaluated: freshly after accident, right...