Elastic scattering and total reaction cross sections of^(6)Li examined via a microscopic continuum discretized coupled-channels model  

作　　者：陈文棣 庞丹阳 郭海瑞 叶涛 孙伟力 应阳君 Wendi Chen;Danyang Pang;Hairui Guo;Tao Ye;Weili Sun;Yangjun Ying(School of Physics,Beihang University,Beijing 100191,China;Institute of Applied Physics and Computational Mathematics,Beijing 100094,China)

机构地区：[1]School of Physics,Beihang University,Beijing 100191,China [2]Institute of Applied Physics and Computational Mathematics,Beijing 100094,China

出　　处：《Chinese Physics C》2024年第1期71-81,共11页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(U2067205)。

摘　　要：We present a systematic study of 6Li elastic scattering and total reaction cross sections at incident energies around the Coulomb barrier within the continuum discretized coupled-channels(CDCC)framework,where 6Li is treated in anα+d two-body model.Collisions with 27Al,64Zn,138Ba,and 208Pa are analyzed.The microscopic optical potentials(MOP)based on Skyrme nucleon-nucleon interaction forαand d are adopted in CDCC calculations and satisfactory agreement with the experimental data is obtained without any adjustment on MOPs.For comparison,αand d global phenomenological optical potentials(GOP)are also used in CDCC analysis and a reduction of no less than 50%on the surface imaginary part of deuteron GOP is required for describing the data.In all cases,the 6Li breakup effect is significant and provides repulsive correction to the folding model potential.The reduction on the surface imaginary part of GOP of deuteron reveals a strong suppression of the reaction probability of deuteron as a component of 6Li when compared with that of a free deuteron.Further investigation is performed by considering the d breakup process equivalently within the dynamic polarization potential approach,and the results show that d behaves in a manner similar to a tightly bound nucleus in 6Li induced reactions.

关 键 词：continuum discretized coupled channels method microscopic optical potential 6Li induced reaction elastic scattering total reaction cross section 

分 类 号：O571[理学—粒子物理与原子核物理]