Benchmarking Fast Neutrons Leakage Spectrum From Copper Block With 252Cf Source in Center

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F23%3AN0000012" target="_blank" >RIV/26722445:_____/23:N0000012 - isvavai.cz</a>

Result on the web

<a href="https://asmedigitalcollection.asme.org/nuclearengineering/article-abstract/doi/10.1115/1.4056508/1154442/Benchmarking-Fast-Neutrons-Leakage-Spectrum-From" target="_blank" >https://asmedigitalcollection.asme.org/nuclearengineering/article-abstract/doi/10.1115/1.4056508/1154442/Benchmarking-Fast-Neutrons-Leakage-Spectrum-From</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/1.4056508" target="_blank" >10.1115/1.4056508</a>

Result language

angličtina

Original language name

Benchmarking Fast Neutrons Leakage Spectrum From Copper Block With 252Cf Source in Center

Original language description

Copper is an important material for the nuclear industry; therefore, the correct copper cross section are essential. This paper deals with benchmarking the fast neutron leakage spectrum from a copper block with an intense 252Cf source. The spectrum was measured by the proton recoil method using a stilbene scintillator and spectrometer with pulse shape discrimination. The room effect was subtracted experimentally by shielding cone and confirmed computationally. Simulations were performed using the MCNP6.2 Monte Carlo code. A detailed study on uncertainties has been made. Consequently, as the main source of uncertainties, the measurement apparatus was determined (namely, calibration and number of iterations—up to 15%). From the parameter uncertainty, the most important effects are connected with the mass of cube material—the thickness of the assembly (up to 2%). The effect of copper density uncertainty is low because density was determined experimentally with low uncertainty. The uncertainty related to parameter uncertainties in source structural components is negligible because even neglection of all components leads to a shift in leakage spectra below 7%. Several copper nuclear data libraries were tested as well, and it was found that the calculation with JEFF-3.3 gives the most discrepant results with a discrepancy of up to 60%. The closest results were obtained with ENDF/B-VIII.0 (below 5 MeV, discrepancy within 10%) and JENDL-4.0 (above 5 MeV, discrepancy within 15%). ENDF/B-VII.1 library is relatively close in the region above 5 MeV (discrepancy within 15%), below 5 MeV the agreement is worse (up to 40% discrepancy).

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

<a href="/en/project/VI20192022116" target="_blank" >VI20192022116: Methods of the scintillation radiation measurement and transfer based on opt fibers with respect to energy of ionizing radiation</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Nuclear Engineering and Radiation Science

ISSN

2332-8983

e-ISSN

2332-8975

Volume of the periodical

9

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

1-7

UT code for WoS article

001003208300004

EID of the result in the Scopus database

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