Search Results - "Rypar, Vojtěch"
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The methodology for validation of cross sections in quasi monoenergetic neutron field
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-10-2022)“…Dosimetry cross sections are fundamental quantities for proper determination of the neutron fluences in points of interest under heavy radiation load. One of…”
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Measurement of neutron spectra in a silicon filtered neutron beam using stilbene detectors at the LVR-15 research reactor
Published in Applied radiation and isotopes (01-10-2017)“…A well-defined neutron spectrum is an essential tool for calibration and tests of spectrometry and dosimetry detectors, and evaluation methods for spectra…”
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3
Validation of zirconium isotopes (n,g) and (n,2n) cross sections in a comprehensive LR-0 reactor operative parameters set
Published in Applied radiation and isotopes (01-10-2017)“…Zirconium is an important material used in most of reactor concepts for fuel cladding. Thus the knowledge of its cross section is important for reliable…”
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4
Broomstick experiment with copper in VR-1 reactor
Published in Annals of nuclear energy (01-02-2025)“…•Broomstick experiment using the VR-1 reactor.•Collimated beam from the radial channel of the VR-1 reactor.•Measurement of neutron flux behind copper…”
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5
Measurement and calculation of fast neutron and gamma spectra in well defined cores in LR-0 reactor
Published in Applied radiation and isotopes (01-02-2017)“…A well-defined neutron spectrum is essential for many types of experimental topics and is also important for both calibration and testing of spectrometric and…”
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6
Measurement of spectrum averaged cross sections in LR-0 benchmark reference neutron field
Published in Annals of nuclear energy (01-10-2024)“…•Measurement of reaction rates in benchmark reference neutron field in LR-0.•Evaluation of 14N(n,p)14C reaction integral cross section in LR-0…”
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The methodology of characterization of neutron leakage field from PET production cyclotron for experimental purposes
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-10-2019)“…During the production of 18F isotope for radiopharmaceuticals in 18O(p,n)18F reactions, the leakage neutrons are mostly considered as a waste product. The…”
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NEW VALIDATION OF SI CROSS-SECTION USING SILICA SAND
Published in EPJ Web of conferences (2021)“…Silicon cross-sections, being important for a criticality safety of final spent fuel disposals, were recently reevaluated within the IAEA INDEN project…”
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9
A reference neutron field for measurement of spectrum averaged cross sections
Published in Annals of nuclear energy (01-06-2020)“…•Setting of reference neutron field in LR-0 reactor.•Calculation and measurement of selected reactions reaction rates in LR-0.•Discrepancies between…”
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The effect of heavy reflector on neutronic parameters of core
Published in Annals of nuclear energy (01-04-2022)“…•Measurement of critical parameters of variously reflected core arrangements.•Measurement of fission density across cores with various neutron…”
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Measurement of dosimetrical cross sections with 14.05 MeV neutrons from compact neutron generator
Published in Annals of nuclear energy (01-10-2023)“…•Measurement of reaction rates in compact DT generator.•Calculation of neutron flux in targets around compact DT generator.•Determination of DD neutrons in…”
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12
Measurement of various monitors reaction rate in a special core at LR-0 reactor
Published in Annals of nuclear energy (01-02-2018)“…•Validation of the flux distribution in the center of a special core.•Calculation of 54Fe(n,A), 54Fe(n,p) and 89Y(n,2n) reaction rates.•Measurement of…”
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13
Measurements of neutron transport of well defined silicon filtered beam in lead
Published in Applied radiation and isotopes (01-12-2018)“…The correct description of neutron transport in lead is an essential task for correct description of tritium production in the DEMO (DEMOnstration Power…”
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14
Neutron propagation experiments with a lead test section inserted in the core of the LR-0 reactor
Published in Nuclear engineering and design (15-08-2018)“…•Transmission experiment with lead section in light water reactor.•Neutron spectrum measurement in energy range of 0.1–10 MeV.•Critical experiment. Validation…”
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15
Study of graphite reactivity worth on well-defined cores assembled on LR-0 reactor
Published in Annals of nuclear energy (01-01-2016)“…•A light water critical facility for graphite reactivity worth measurements.•Comparison of calculated and measured keff.•Effect of graphite description on…”
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Testing of various neutron filters in reference neutron field in LR-0 reactor for nuclear data validation and verification
Published in Applied radiation and isotopes (01-03-2021)“…Neutron activation analysis is the reference method used for offline determination of the neutron flux density in defined positions. It can be used in the…”
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17
Determining the axial power profile of partly flooded fuel in a compact core assembled in reactor LR-0
Published in Annals of nuclear energy (01-04-2016)“…•Fission density in partly flooded compact core.•Calculation of fission density axial profile.•Significant calculational under prediction of experimental axial…”
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NEUTRON FIELD MOCK-UP DEVELOPMENT FOR THE FLUORIDE SALT REACTORS NEUTRONIC RESEARCH
Published in EPJ Web of conferences (01-01-2021)“…Experimental work at the LR-0 reactor was carried out to determine the possibility of the mock-up neutron field creation for the fluoride salt-based reactors…”
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Characterization of mixed N/G beam of the VR-1 reactor
Published in Annals of nuclear energy (01-12-2018)“…•Validation of the neutron spectra in VR-1 channel.•Measurement of gamma spectra in VR-1 channel.•Comparison of the experimental data with…”
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Comparison of fast neutron spectra in graphite and FLINA salt inserted in well-defined core assembled in LR-0 reactor
Published in Annals of nuclear energy (01-09-2015)“…•Neutron spectra measured in graphite and LiF+NaF.•Comparison of calculated and measured neutron spectra.•Effect of 19F on variation between various library…”
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