Pre-neutron-emission Mass Distributions for Reaction ^(232)Th(n,f) up to 60 MeV

作     者：孙小军 潘成华 余呈刚 杨永栩 王宁 

作者机构：Department of Physics Guangxi Normal University Shanghai Institute of Applied Physics Chinese Academy of Sciences 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2014年第61卷第11期

页      面：711-716页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by Guangxi University Science and Technology Research Projects under Grant No.2013ZD007 Guangxi Natural Science Foundation under Grant No.2012GXNSFAA053008 National Natural Science Foundation of China under Grant No.11265004 the Th-based Molten Salt Reactor Power System of the Strategic Pioneer Science and Technology Projects from the Chinese Academy of Sciences 

主　　题：232Th(n f) pre-neutron-emission mass distribution evaporation neutron fission potential 

摘      要：The pre-neutron-emission mass distributions for reaction232Th(n, f) up to 60 MeV are systematically studied with an empirical fission potential model. The energy dependences of the peaks and valleys of the pre-neutronemission mass distributions are described by the exponential expressions based on the newly measured data. The energy dependence of evaporation neutrons before scission, which plays a crucial role for the reasonable description of the mass distribution, is also considered. Both the double-humped and triple-humped shape of the measured pre-neutronemission mass distributions for reaction232Th(n, f) are reasonably well reproduced at incident energies up to 60 MeV.The mass distributions at unmeasured energies and the critical energies at which the humped pre-neutron-emission mass distributions are transformed into each other are also predicted.