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arXiv 2302.03129nucl-thnucl-ex
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快能区$^{239}$ Pu中子诱发反应的洛斯阿拉莫斯评价

The Los Alamos evaluation of $^{239}$Pu neutron-induced reactions in the fast energy range

M. R. Mumpower, D. Neudecker, T. Kawano, M. Herman, N. Kleedtke, A. E. Lovell, I. Stetcu, P. Talou

摘要:

在快能区对$^{239}$ Pu中子诱导反应截面的计算进行了修正。评估开始于2.5千电子伏的入射中子能量,并已扩展到30兆电子伏。自ENDF/B-VIII.0发布以来,本评价中还包括其他几个值得注意的变化,包括采用标准裂变截面,纳入Mosby等人的新辐射捕获数据,纳入Meot等人的(n,2n)数据,除了在反应模型的处理方面的进展之外。与以前的评估工作相比,这次评估是可重复的,使用Git存储库按时间顺序存储详细信息。最终评价结果已汇编成ENDF格式的文件,该文件已通过NJOY成功处理,检查内部一致性,与旧评价进行基准测试,并根据一套关键组件和脉冲球进行验证。

英文摘要:

A major revision of the evaluation of $^{239}$Pu neutron-induced reaction cross sections is reported in the fast energy range. The evaluation starts at 2.5 keV incident neutron energy and has been extended up to 30 MeV. Several other notable changes are included in this evaluation since the release of ENDF/B-VIII.0 including the adoption of the Standards fission cross section, inclusion of new radiative capture data of Mosby et al., inclusion of the (n,2n) data of Meot et al., in addition to advances in the treatment of reaction modeling. In contrast to previous evaluation efforts, this evaluation is reproducible with detailed information stored chronologically utilizing a Git repository. The final evaluation results have been compiled into an ENDF-formatted file, which has been processed successfully through NJOY, checked for internal consistency, benchmarked versus older evaluations and validated against a suite of critical assemblies and pulsed-spheres.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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