A5034659483- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear Materials and Properties
- Graphite, nuclear technology, radiation studies
- Radiation Therapy and Dosimetry
- Nuclear physics research studies
- Advanced Radiotherapy Techniques
Research Centre Rez
2023-2024
Czech Technical University in Prague
2024
The measured and evaluated excitation functions are fundamental quantities that affect the accuracy of all calculations in nuclear applications. Some cross sections, such as 14N(n,p)14C, have added value for special applications, these reactions may be responsible possible contamination industrial processes spent fuel reprocessing. For validation we can rely on comparison calculated spectrum averaged sections (SACS) given neutron with SACS value. benchmark reference field has been...
This paper deals with the measurement of Spectrum Averaged Cross Sections in two different neutron fields formed zero power reactors. The first was Benchmark Neutron Reference Field LR-0 reactor, and second field center vertical channel touching fuel VR-1 reactor. spectrum averaged cross section differs for both cases as spectra differ, but after normalization to 235 U PFNS using calculated correction, results are good agreement, thus confirming similar 1 – 14 MeV region. A agreement between...
Transmutation detectors (TMDs) are based on a similar principle as neutron activation (NADs). In both cases, the fluence is estimated from number of reactions in detectors. The main differences between these two type product created by nuclear reaction and evaluation irradiated TMD, transmuted nuclide stable, gained analytical methods suitable for measuring low concentrations. NAD, leads to production radionuclides evaluated activity measured radiometric instruments. While TMDs thermal...
The assessment of the neutron flux distribution in nuclear power plant components, like reactor internals and pressure vessel, is one most important parts their residual lifetime evaluation process because irradiation damage these components strongly dependent on it. fast fluences reactors are generally determined using calculations verified by measurements. Discrepancies between them sometimes occur, which can be caused inaccuracies used transport calculations. This paper quantifies effect...
Dosimetry cross sections are fundamental quantities necessary for neutron dosimetry using the activation method. It is worth noting that uncertainty in major source of calculational predictions nuclear data simulations. Thus, section validation a key issue any aims refinement predictions. A small compact generator promising tool performing integral experiments and even differential experiments. This paper deals with measurement D-T 14.05 ± 0.08 MeV emission (1×108 n/s into 4π). Achieving...
The spectrum averaged cross sections (SACS) in standard neutron field, e. g. 252Cf(s.f.), is a preferable tool for section validation. A large set of measurements reactions with high energy thresholds was previously performed. aim the presented work to focus on lower threshold reactions, especially inelastic scattering tin foil, more specifically reaction 117Sn(n,n’)117mSn, and zinc precisely 67Zn(n,p)67Cu. All these are special interest intermediate range, which essential classical reactor...
Dosimetry cross sections are fundamental quantities necessary for neutron dosimetry using the activation method. It is worth noting that uncertainty in major source of calculational predictions nuclear data simulations thus, section validation a key issue any aims refinement predictions. A small compact generator promising tool performing integral experiments and even differential experiments. This paper deals with measurement D-T 14.05 MeV emission (10E8 n/s into 4pi). Achieving measurable...