Calculation of prompt fission neutron spectrum for ~(233)U(n,f) reaction by the semi-empirical method

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英文篇名：Calculation of prompt fission neutron spectrum for ~(233)U(n,f) reaction by the semi-empirical method 作者：陈永静 ; 贾敏 ; 刘廷进 ; 舒能川 英文作者：CHEN Yong-Jing;JIA Min;LIU Ting-Jin;SHU Neng-Chuan;China Nuclear Data Center,China Institute of Atomic Energy;Department of Mathematics and Information Science,North China University of Water Conservancy and Electric Power; 英文关键词：~(233)U(n,f);;fission fragment;;excitation energy partition;;prompt fission neutron spectrum 中文刊名：KNWL 英文刊名：中国物理C 机构：China Nuclear Data Center,China Institute of Atomic Energy;Department of Mathematics and Information Science,North China University of Water Conservancy and Electric Power; 出版日期：2014-05-15 出版单位：Chinese Physics C 年：2014 期：v.38 基金：Supported by National Natural Science Foundation of China(11205246,91126010,91226102) 语种：英文; 页：KNWL201405003 页数：5 CN：05 ISSN：11-5641/O4 分类号：20-24

摘要

The prompt fission neutron spectra for the neutron-induced fission of ~(233)U for low energy neutrons(below6 MeV) are calculated using nuclear evaporation theory with a semi-empirical method,in which the partition of the total excitation energy between the fission fragments for the nth+~(233)U fission reactions is determined by the available experimental and evaluation data.The calculated prompt fission neutron spectra agree well with the experimental data.The proportions of high-energy neutrons of prompt fission neutron spectrum versus incident neutron energies are investigated with the theoretical spectra,and the results are consistent with the systematics.The semi-empirical method could be a useful tool for the prompt evaluation of fission neutron spectra.
        The prompt fission neutron spectra for the neutron-induced fission of ~(233)U for low energy neutrons(below6 MeV) are calculated using nuclear evaporation theory with a semi-empirical method,in which the partition of the total excitation energy between the fission fragments for the nth+~(233)U fission reactions is determined by the available experimental and evaluation data.The calculated prompt fission neutron spectra agree well with the experimental data.The proportions of high-energy neutrons of prompt fission neutron spectrum versus incident neutron energies are investigated with the theoretical spectra,and the results are consistent with the systematics.The semi-empirical method could be a useful tool for the prompt evaluation of fission neutron spectra.

引文

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