Improvement of Geant4 Neutron-HP package: Doppler broadening of the neutron elastic scattering kernel
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F23%3AN0000031" target="_blank" >RIV/26722445:_____/23:N0000031 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/23:00381354
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0306454923002682" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0306454923002682</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.anucene.2023.109949" target="_blank" >10.1016/j.anucene.2023.109949</a>
Alternative languages
Result language
angličtina
Original language name
Improvement of Geant4 Neutron-HP package: Doppler broadening of the neutron elastic scattering kernel
Original language description
Whether it is for shielding applications or for safety criticality studies, numerically solving the neutron transport equation with a good accuracy requires to precisely estimate the Doppler broadened elastic scattering kernel in the thermal and epithermal energy range of neutrons travelling in a free gas. In Geant4, low energy neutrons are transported using evaluated data libraries handled by the Neutron High-Precision (Neutron-HP) package. Version 11.00.p03 of the code features in particular the Doppler broadened elastic scattering kernel, provided by the so-called 'Sampling of the Velocity of the Target' (SVT) method. However this latter fails for resonant heavy nuclei such as U-238 and can severely impact the solving of the Boltzmann equation in fissile media. To overcome this shortcoming, the Doppler Broadening Rejection Correction (DBRC) method has been implemented in Geant4 and successfully validated with the reference Monte Carlo neutron transport code Tripoli-4 (R) (version 11). This development will be taken into account in the next release of the code. All the validations have been performed with an automated benchmark tool which has been designed to support the quality assurance of the Geant4 Neutron-HP package. This tool is currently available on an ad hoc Gitlab repository and will be included in Geant4.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/LM2023041" target="_blank" >LM2023041: Czech International Centre of Research Reactors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Annals of Nuclear Energy
ISSN
0306-4549
e-ISSN
1873-2100
Volume of the periodical
192
Issue of the periodical within the volume
November
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
1-7
UT code for WoS article
001021510100001
EID of the result in the Scopus database
2-s2.0-85161289202