曲率能及压缩能对缺中子裂变系统断前中子发射的影响(英文)  

Influence of Curvature and Compressibility Energies upon Prescission Neutron Emission of Neutron-Deficient Fissioning Systems

作　　者：毛英臣[1] 顾柏平[1] 

机构地区：[1]南京大学物理系,南京210008

出　　处：《高能物理与核物理》2007年第3期258-263,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10535010)资助~~

摘　　要：用改进了的动力学与统计相结合的模型,研究了曲率能及压缩能对4个缺中子裂变系统:188Pt,200Pb, 213Fr和224Th的断前中子发射的影响．计算结果显示用改进模型得到的断前中子多重性相比原来模型的低估要更靠近实验数据．对于目前工作考虑压缩能的原因进行了讨论．The aim of this paper is to study the influence of the curvature and the compressibility energies on prescission neutron emission of four neutron-deficient systems： ^188Pt, ^200Pb, ^213Fr and ^224Th within a modified version of the combined dynamical statistical model. The calculated results show that prescission neutron multiplicities from the modified model are closer to the data compared with the underestimate of the original one. The physics that the compressibility energy needs to be considered in this work is discussed.

关 键 词：曲率能 压缩能缺中子裂变系统 能级密度参数 断前中子多重性 

分 类 号：O571.5[理学—粒子物理与原子核物理]