Examination of Silicon-28 and Uranium-235 resonance parameters based on integral and differential experiments

Andrianova, Olga Nikolaevna; Lomakov, G.B.; Manturov, G. N.

doi:10.1016/j.nucet.2016.05.005

Cited by 4 publications

(2 citation statements)

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“…Transmission measurements were evaluated in 13 energy intervals [8]. The obtained for silicon effective total cross sections within energy interval from 390 to 700 keV (Fig.…”

Section: Silicon Experimentsmentioning

confidence: 99%

Examination of total cross section resonance structure of niobium and silicon in neutron transmission experiments

2017

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Abstract. The neutron transmission experiments are one of the main sources of information about the neutron cross section resonance structure and effect in the self-shielding. Such kind of data for niobium and silicon nuclides in energy range 7 keV to 3 MeV can be obtained from low-resolution transmission measurements performed earlier in Russia (with samples of 0.027 to 0.871 atom/barn for niobium and 0.076 to 1.803 atom/barn for silicon). A significant calculation-to-experiment discrepancy in energy range 100 to 600 keV and 300 to 800 keV for niobium and silicon, respectively, obtained using the evaluated nuclear data library ROSFOND, were found. The EVPAR code was used for estimation the average resonance parameters in energy range 7 to 600 keV for niobium. For silicon a stochastic optimization method was used to modify the resolved resonance parameters in energy range 300 to 800 keV. The improved ROSFOND evaluated nuclear data files were tested in calculation of ICSBEP integral benchmark experiments.

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“…Transmission measurements were evaluated in 13 energy intervals [8]. The obtained for silicon effective total cross sections within energy interval from 390 to 700 keV (Fig.…”

Section: Silicon Experimentsmentioning

confidence: 99%

Examination of total cross section resonance structure of niobium and silicon in neutron transmission experiments

2017

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“…Neutron cross-section data were obtained from the experiments carried out at different times with different BFS core configurations and compositions to examine the properties of fuel and structural materials [1]. These data were used for corrections of the ABBN-group constant system and the ROSFOND -Russian library of evaluated neutron data [2].…”

Section: Introductionmentioning

confidence: 99%

Impact of uncertainties in the uranium 235 cross section resonance structure on characteristics measured in the BFS-79 critical assemblies

2017

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Abstract. The report presents the results of an analysis of benchmark experiments form the international ICSBEP Handbook (HEU-MET-INTER-005) carried out at the the SSC RF -IPPE in cooperation with the Idaho National Laboratory (INL, USA) applicable to the verification of calculations of a wide range of tasks related to safe storage of vitrified radioactive waste. Experiments on the BFS assemblies make it possible to perform a large series of studies needed for neutron data refinement, including measurements of reactivity effects which allow testing the neutron cross section resonance structure. This series of studies is considered as a sample joint analysis framework for differential and integral experiments required to correct nuclea data files of the ROSFOND evaluated neutron data library. Thus, it is shown that despite the wide range of available experimental data, in so far as it relates to the resonance region refinement, the experiments on reactivity measurement make it possible to more subtly reflect the resonance structure peculiarities in addition to the time-of-flight measurement method.

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Comprehensive validation of silicon cross sections

Czakoj

Košťál

Šimon

et al. 2020

Nuclear Engineering and Technology

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Examination of Silicon-28 and Uranium-235 resonance parameters based on integral and differential experiments

Cited by 4 publications

References 1 publication

Examination of total cross section resonance structure of niobium and silicon in neutron transmission experiments

Examination of total cross section resonance structure of niobium and silicon in neutron transmission experiments

Impact of uncertainties in the uranium 235 cross section resonance structure on characteristics measured in the BFS-79 critical assemblies

Comprehensive validation of silicon cross sections

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