Validation of nickel isotopes neutron cross sections using nickel spherical benchmark

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000025" target="_blank" >RIV/26722445:_____/18:N0000025 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.apradiso.2018.07.030" target="_blank" >http://dx.doi.org/10.1016/j.apradiso.2018.07.030</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apradiso.2018.07.030" target="_blank" >10.1016/j.apradiso.2018.07.030</a>

Result language

angličtina

Original language name

Validation of nickel isotopes neutron cross sections using nickel spherical benchmark

Original language description

The fast leakage neutron spectra have been measured on spherical nickel benchmark assembly of diameter 50 cm. The( 252)Cf neutron source with approximate emission of 5.0.10(8) n/s was placed into the centre of the sphere. Fast neutron spectrum in the range of 1-10 MeV was measured in the distance of 1 m from the sphere centre by means of proton recoil method using scintillation stilbene crystal. The experimental data were compared to transport calculations based on several evaluated nuclear data libraries using MCNP6. MCNP6 was compared with SCALE/MONACO program using the same ENDF/B-VII.1 library which leads to different differential neutron flux results. Best experimental agreement with calculation in MCNP6 is achieved with ENDF/B-VII.1 library. Contrary, worst agreement is achieved with JENDL-4.0 and CENDL-3.1 libraries. Furthermore, cross section sensitivity analysis for elastic and inelastic scattering for both main nickel isotopes ( Ni-58, Ni-60) was performed. It was shown that Ni-58 isotope has higher influence on the result than( 60)Ni isotope in the entire energy range under study. The highest influence has the elastic XS of( 58)Ni around energy of 1.5 MeV. The inelastic cross section (XS) of Ni-58 dominates in the energies above 2 MeV where two percent rise due to the inelastic XS leads up to 3.3% decrease in the neutron flux.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Radiation and Isotopes

ISSN

0969-8043

e-ISSN

—

Volume of the periodical

140

Issue of the periodical within the volume

October

Country of publishing house

GB - UNITED KINGDOM

Number of pages

5

Pages from-to

247-251

UT code for WoS article

000445308700038

EID of the result in the Scopus database

2-s2.0-85050755530