Nuclear dynamics in multinucleon transfer reactions near Coulomb barrier energies  

作　　者：Peng-Hui Chen Fei Niu Ya-Fei Guo Zhao-Qing Feng 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences,Lanzhou 730000, China [2]University of Chinese Academy of Sciences, Beijing 100190,China [3]South China University of Technology, Guangzhou 510641,China

出　　处：《Nuclear Science and Techniques》2018年第12期128-133,共6页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.11722546 and 11675226);the Talent Program of South China University of Technology(No.K5180470)

摘　　要：The mechanism of multinucleon transfer reactions has been investigated within the dinuclear system model, in which the sequential nucleon transfer is described by solving a set of microscopically derived master equations. The transfer dynamics in the reaction of^(136)Xe+^(208)Pb near Coulomb barrier energies is thoroughly analyzed. It is found that the total kinetic energies of primary fragments are dissipated from the relative motion energy of two touching nuclei and exhibit a symmetric distribution along the fragment mass. The angular distribution of the projectile-like fragments moves forward with increasing beam energy. However, the target-like fragments exhibit an opposite trend. The shell effect is pronounced due to the fragment yields in multinucleon transfer reactions.The mechanism of multinucleon transfer reactions has been investigated within the dinuclear system model, in which the sequential nucleon transfer is described by solving a set of microscopically derived master equations. The transfer dynamics in the reaction of ^136Xe ＋ ^208pb near Coulomb barrier energies is thoroughly analyzed. It is found that the total kinetic energies of primary fragments are dissipated from the relative motion energy of two touching nuclei and exhibit a symmetric distribution along the fragment mass. The angular distribution of the projectile-like fragments moves forward with increasing beam energy. However, the target-like fragments exhibit an opposite trend. The shell effect is pronounced due to the fragment yields in multinucleon transfer reactions.

关 键 词：原子动力学 转移反应 精力 库仑 相对运动 显微镜 子转移 原子核 

分 类 号：O571[理学—粒子物理与原子核物理]