Influence of octupole deformation and orientation on the potential energy surface in the di-nuclear system model  

作　　者：王楠 周善贵 赵恩广 W.Scheid 

机构地区：[1]College of Physics,Shenzhen University [2]Institute of Theoretical Physics,Chinese Academy of Sciences [3]Center of Theoretical Nuclear Physics,National Laboratory of Heavy ion Accelerator [4]Institut fr Theoretische Physik,Justus-Liebig-Universitt

出　　处：《Chinese Physics C》2010年第10期1615-1621,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10975100,11011130216,10979024,10705014);the financial support from DFG of Germany and Major State Basic Research Development Progrom of China (2007CB81500)

摘　　要：The nuclear and Coulomb potentials between deformed nuclei with octupole deformations and arbitrary orientations are evaluated numerically. The effects of the octupole deformation on the potential between nuclei and the potential energy surface （PES） used in the description of the production of super-heavy nuclei （SHN） by heavy-ion fusion reactions are investigated in the di-nuclear system model. It is found that the nuclear octupole deformation significantly changes the shape of the PES, which may influence the fusion probability of the SHN. Also, PESs in the tip-belly and belly-belly cases are investigated. Finally, the quasi-fission barriers in the tip-tip and belly-belly cases are evaluated. It is found that the quasi-fission barriers of the belly-belly case are generally larger than those of the tip-tip case.The nuclear and Coulomb potentials between deformed nuclei with octupole deformations and arbitrary orientations are evaluated numerically. The effects of the octupole deformation on the potential between nuclei and the potential energy surface （PES） used in the description of the production of super-heavy nuclei （SHN） by heavy-ion fusion reactions are investigated in the di-nuclear system model. It is found that the nuclear octupole deformation significantly changes the shape of the PES, which may influence the fusion probability of the SHN. Also, PESs in the tip-belly and belly-belly cases are investigated. Finally, the quasi-fission barriers in the tip-tip and belly-belly cases are evaluated. It is found that the quasi-fission barriers of the belly-belly case are generally larger than those of the tip-tip case.

关 键 词：super-heavy nuclei di-nuclear system model potential energy surface 

分 类 号：O571[理学—粒子物理与原子核物理]