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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Data Assimilation Using Subcritical Measurement of Prompt Neutron Decay Constant

http://hdl.handle.net/2237/00032880
http://hdl.handle.net/2237/00032880
48b36d88-861d-4e01-a833-2411fe60bfe5
名前 / ファイル ライセンス アクション
NSE194_11_pp1089-1104_2020_r1.pdf NSE194_11_pp1089-1104_2020_r1.pdf (1.2 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-10-26
タイトル
タイトル Data Assimilation Using Subcritical Measurement of Prompt Neutron Decay Constant
言語 en
著者 Endo, Tomohiro

× Endo, Tomohiro

WEKO 101885

en Endo, Tomohiro

Search repository
Yamamoto, Akio

× Yamamoto, Akio

WEKO 101886

en Yamamoto, Akio

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 This is an Accepted Manuscript of an article published by Taylor & Francis Group in Nuclear Science and Technology on 09/03/2020, available online: http://www.tandfonline.com/10.1080/00295639.2020.1720499.
キーワード
主題Scheme Other
主題 Prompt neutron decay constant
キーワード
主題Scheme Other
主題 Feynman-α method
キーワード
主題Scheme Other
主題 perturbation theory
キーワード
主題Scheme Other
主題 bias factor method
キーワード
主題Scheme Other
主題 cross-section adjustment method
抄録
内容記述 The prompt neutron decay constant α in a steady-state subcritical system can be directly measured using a reactor noise analysis method such as the Feynman-α method. To reduce the nuclear data–induced uncertainty of keff for a target system, this study investigates the applicability of data assimilation techniques, i.e., the bias factor method and the cross-section adjustment method, based on a subcritical measurement of α conducted at Kyoto University Critical Assembly (KUCA). The sensitivity coefficients of keff and α with respect to the nuclear data were efficiently estimated using a deterministic SN transport code with first-order perturbation theory. As a result, the a priori relative uncertainty of keff due to the 56-group SCALE covariance data can be reduced if there is strong correlation between the measured α and the target keff. The experimental value of α contributes to improving the nuclear data of total fission spectrum χ and total fission neutron number ν via strong correlations between χ and prompt χp and between ν and prompt νp, by utilizing the sensitivity coefficients of α with respect to prompt χp and νp.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 Published online: 09 Mar 2020 ファイル公開:2021/03/09 ファイル差し替え:2021/06/25
言語 en
内容記述タイプ Other
出版者
言語 en
出版者 Taylor & Francis
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1080/00295639.2020.1720499
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0029-5639
書誌情報 en : Nuclear Science and Engineering

巻 194, 号 11, p. 1089-1104, 発行日 2020
著者版フラグ
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