Comparison of thick-target (alpha,n) yield calculation codes
Neutron production yields and energy distributions from (α,n) reactions in light elements were calculated using three different codes (SOURCES, NEDIS and USD) and compared with the existing experimental data in the 3.5-10 MeV alpha energy range. SOURCES and NEDIS display an agreement between calcula...
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doaj-2582b0e86cf04c8b80e5b3e9062bf54b2021-08-02T05:47:10ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011530702110.1051/epjconf/201715307021epjconf_icrs2017_07021Comparison of thick-target (alpha,n) yield calculation codesFernandes Ana C.0Kling Andreas1Vlaskin Gennadiy N.2Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de LisboaCentro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de LisboaInnovation Technology Centre for the PRORYV Project, ROSATOMNeutron production yields and energy distributions from (α,n) reactions in light elements were calculated using three different codes (SOURCES, NEDIS and USD) and compared with the existing experimental data in the 3.5-10 MeV alpha energy range. SOURCES and NEDIS display an agreement between calculated and measured yields in the decay series of 235U, 238U and 232Th within ±10% for most materials. The discrepancy increases with alpha energy but still an agreement of ±20% applies to all materials with reliable elemental production yields (the few exceptions are identified). The calculated neutron energy distributions describe the experimental data, with NEDIS retrieving very well the detailed features. USD generally underestimates the measured yields, in particular for compounds with heavy elements and/or at high alpha energies. The energy distributions exhibit sharp peaks that do not match the observations. These findings may be caused by a poor accounting of the alpha particle energy loss by the code. A big variability was found among the calculated neutron production yields for alphas from Sm decay; the lack of yield measurements for low (~2 MeV) alphas does not allow to conclude on the codes’ accuracy in this energy region.https://doi.org/10.1051/epjconf/201715307021 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fernandes Ana C. Kling Andreas Vlaskin Gennadiy N. |
spellingShingle |
Fernandes Ana C. Kling Andreas Vlaskin Gennadiy N. Comparison of thick-target (alpha,n) yield calculation codes EPJ Web of Conferences |
author_facet |
Fernandes Ana C. Kling Andreas Vlaskin Gennadiy N. |
author_sort |
Fernandes Ana C. |
title |
Comparison of thick-target (alpha,n) yield calculation codes |
title_short |
Comparison of thick-target (alpha,n) yield calculation codes |
title_full |
Comparison of thick-target (alpha,n) yield calculation codes |
title_fullStr |
Comparison of thick-target (alpha,n) yield calculation codes |
title_full_unstemmed |
Comparison of thick-target (alpha,n) yield calculation codes |
title_sort |
comparison of thick-target (alpha,n) yield calculation codes |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2017-01-01 |
description |
Neutron production yields and energy distributions from (α,n) reactions in light elements were calculated using three different codes (SOURCES, NEDIS and USD) and compared with the existing experimental data in the 3.5-10 MeV alpha energy range. SOURCES and NEDIS display an agreement between calculated and measured yields in the decay series of 235U, 238U and 232Th within ±10% for most materials. The discrepancy increases with alpha energy but still an agreement of ±20% applies to all materials with reliable elemental production yields (the few exceptions are identified). The calculated neutron energy distributions describe the experimental data, with NEDIS retrieving very well the detailed features. USD generally underestimates the measured yields, in particular for compounds with heavy elements and/or at high alpha energies. The energy distributions exhibit sharp peaks that do not match the observations. These findings may be caused by a poor accounting of the alpha particle energy loss by the code. A big variability was found among the calculated neutron production yields for alphas from Sm decay; the lack of yield measurements for low (~2 MeV) alphas does not allow to conclude on the codes’ accuracy in this energy region. |
url |
https://doi.org/10.1051/epjconf/201715307021 |
work_keys_str_mv |
AT fernandesanac comparisonofthicktargetalphanyieldcalculationcodes AT klingandreas comparisonofthicktargetalphanyieldcalculationcodes AT vlaskingennadiyn comparisonofthicktargetalphanyieldcalculationcodes |
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