Development of a Reference Database for Beta-Delayed Neutron Emission

IF 2.8 1区物理与天体物理 Q2 PHYSICS, NUCLEAR Nuclear Data Sheets Pub Date : 2021-03-01 DOI:10.1016/j.nds.2021.04.006

P. Dimitriou , I. Dillmann , B. Singh , V. Piksaikin , K.P. Rykaczewski , J.L. Tain , A. Algora , K. Banerjee , I.N. Borzov , D. Cano-Ott , S. Chiba , M. Fallot , D. Foligno , R. Grzywacz , X. Huang , T. Marketin , F. Minato , G. Mukherjee , B.C. Rasco , A. Sonzogni , N.D. Scielzo

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引用次数: 3

Abstract

Beta-delayed neutron emission is important for nuclear structure and astrophysics as well as for reactor applications. Significant advances in nuclear experimental techniques in the past two decades have led to a wealth of new measurements that remain to be incorporated in the databases.

We report on a coordinated effort to compile and evaluate all the available β-delayed neutron emission data. The different measurement techniques have been assessed and the data have been compared with semi-microscopic and microscopic-macroscopic models. The new microscopic database has been tested against aggregate total delayed neutron yields, time-dependent group parameters in 6-and 8-group re-presentation, and aggregate delayed neutron spectra. New recommendations of macroscopic delayed-neutron data for fissile materials of interest to applications are also presented. The new Reference Database for Beta-Delayed Neutron Emission Data is available online at: http://www-nds.iaea.org/beta-delayed-neutron/database.html.

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β -延迟中子发射参考数据库的开发

延迟中子发射对核结构和天体物理学以及反应堆应用都很重要。过去二十年来，核实验技术取得了重大进展，产生了大量新的测量数据，这些数据仍有待纳入数据库。我们报告了一项协调努力，以汇编和评估所有可用的β-延迟中子发射数据。评估了不同的测量技术，并将数据与半微观和微观宏观模型进行了比较。新的微观数据库已经针对总延迟中子产率、6-和8-基团再现中的时变群参数以及总延迟中子谱进行了测试。本文还提出了有应用价值的可裂变材料的宏观延迟中子数据的新建议。新的beta延迟中子发射数据参考数据库可在网上获得:http://www-nds.iaea.org/beta-delayed-neutron/database.html。

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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

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