Evaluation of pre-neutron-emission mass distributions of neutron-induced typical actinide fission using scission point model  

作　　者：Dong-Ying Huo Xu Yang Chao Han Chang-Qi Liu Kang Wu Xing-Yu Liu Chang Huang Qin Xie Yuan He Xiao-Jun Bao Ze-En Yao Yu Zhang Jun-Run Wang Xiao-Dong Su Zheng Wei 霍东英;杨旭;韩超;刘昌奇;吴康;刘兴宇;黄畅;谢芹;何源;包小军;姚泽恩;张宇;王俊润;苏小东;韦峥(School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;Engineering Research Center for Neutron Application Technology,Ministry of Education,Lanzhou University,Lanzhou 730000,China;School of Mathematics and Statistics,Lanzhou University,Lanzhou 730000,China;Department of Physics,Hunan Normal University,Changsha 410081,China)

机构地区：[1]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [2]Engineering Research Center for Neutron Application Technology,Ministry of Education,Lanzhou University,Lanzhou 730000,China [3]School of Mathematics and Statistics,Lanzhou University,Lanzhou 730000,China [4]Department of Physics,Hunan Normal University,Changsha 410081,China

出　　处：《Chinese Physics C》2021年第11期128-135,共8页中国物理C（英文版）

基　　金：the NSFC-Nuclear Technology Innovation Joint Fund(U1867213);the NSAF(U1830102);the National Natural Science Foundations of China(12075105,11705071,11875155);the Fundamental Research Funds for the Central Universities(lzujbky-2021-kb09)。

摘　　要：The scission point model is improved by considering the excitation-dependent liquid drop model to calculate mass distributions for neutron-induced actinide nuclei fission.Excitation energy effects influence the deformations of light and heavy fragments.The improved scission point model shows a significant advance with regard to accuracy for calculating pre-neutron-emission mass distributions of neutron-induced typical actinide fission with incident-neutron-energies up to 99.5 MeV.The theoretical frame assures that the improved scission point model is suitable for evaluating the fission fragment mass distributions,which will provide guidance for studying fission physics and designing nuclear fission engineering and nuclear transmutation systems.

关 键 词：mass distributions scission-point model dinuclear system model 

分 类 号：O571.43[理学—粒子物理与原子核物理]