Measurement of the 239Pu(n,f)/235U(n,f) Cross-Section Ratio with the NIFFTE fission Time Projection Chamber

IF 2.8 1区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Data Sheets Pub Date : 2021-12-01 DOI:10.1016/j.nds.2021.11.001

引用次数: 0

Abstract

The ²³⁹Pu(n,f)/²³⁵U(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction of fission-fragment ionization profiles, allowing for a precise quantification of measurement uncertainties. The measurement was performed at the Los Alamos Neutron Science Center which provides a pulsed white source of neutrons. The data are recommended to be used as a cross-section ratio shape. A discussion of the status of the absolute normalization and comparisons to ENDF evaluations and previous measurements is included.

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用NIFFTE裂变时间投射室测量239Pu(n,f)/235U(n,f)截面比

用裂变时间投射室(fissionTPC)在100 keV到100 MeV范围内测量了239Pu(n,f)/235U(n,f)的截面比。fissionTPC提供了裂变碎片电离剖面的三维重建，允许测量不确定度的精确量化。测量是在洛斯阿拉莫斯中子科学中心进行的，该中心提供脉冲白色中子源。该数据建议用作截面比形状。讨论了绝对归一化的现状，并与ENDF评估和以前的测量结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Data Sheets 物理-物理：核物理

CiteScore

7.80

自引率

5.40%

发文量

审稿时长

>12 weeks

期刊介绍： The Nuclear Data Sheets are current and are published monthly. They are devoted to compilation and evaluations of experimental and theoretical results in Nuclear Physics. The journal is mostly produced from Evaluated Nuclear Structure Data File (ENSDF), a computer file maintained by the US National Nuclear Data Center