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Consistent adjustment of radioactive decay and fission yields data with measurement data of decay heat and beta-delayed neutron activities

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Title: Consistent adjustment of radioactive decay and fission yields data with measurement data of decay heat and beta-delayed neutron activities
Authors: Chiba, Go Browse this author →KAKEN DB
Keywords: Nuclear data adjustment
Decay data
Fission yields data
Decay heat
beta-Delayed neutrons
Issue Date: Mar-2017
Publisher: Elsevier
Journal Title: Annals of nuclear energy
Volume: 101
Start Page: 23
End Page: 30
Publisher DOI: 10.1016/j.anucene.2016.09.054
Abstract: Decay heat and delayed neutron yields, which are important physical quantities in the field of the nuclear engineering, are dependent on common nuclear data such as radioactive decay data and fission yields data of fission product nuclides. In the present study, correlations between uncertainties of these two quantities are investigated. Nuclear data relevant to uranium-235 and plutonium-239 fissions with thermal neutron are adjusted consistently with a procedure based on Bayes' theorem using the measurement data of decay heat and delayed neutron activities. Numerical results suggest that the correlation between decay heat and delayed neutron activities uncertainties is not significant, and that independent treatments of decay heat or delayed neutron activities are possible. The effect of the consistent treatment of decay heat and delayed neutron activities is, however, observed in the adjustment results in some nuclear data such as uranium-235 thermal fission yields of yttrium-100m and zirconium-100.
Rights: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/72704
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 千葉 豪

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