Systematic studies on α-decay half-lives for super heavy nuclei  

作　　者：张地大 陈宝秋 马中玉 

机构地区：[1]School of Nuclear Engineering and Technology, East China Institute of Technology [2]China Institute of Atomic Energy

出　　处：《Chinese Physics C》2010年第3期334-339,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10875150, 10775183, 10535010);Major State Basic Research Development Programme in China (2007CB815000)

摘　　要：Radioactive decay of super heavy nuclei via the emission of α-particles has been studied theoretically in the preformed cluster model （PCM）. The nucleus-nucleus （NN） potential is obtained by double folding the density distributions of the α-particle and the daughter nucleus with a realistic effective interaction. The M3Y effective interaction, supplemented by a zero-range pseudo-potential for exchange term, is used to calculate the NN potential. The α decay half-lives for 317 nuclei at Z=102 120 are performed in the PCM framework with the theoretical Q values extracted from the MSller-Nix-Kratz and Liran-Marinov-Zeldes mass tables and are compared with the experimental data. The calculated results are also compared with those obtained by using Q values from the Muntian-Hofmann-Patyk-Sobiczewski and Myers-Swiatecki mass estimates.Radioactive decay of super heavy nuclei via the emission of α-particles has been studied theoretically in the preformed cluster model （PCM）. The nucleus-nucleus （NN） potential is obtained by double folding the density distributions of the α-particle and the daughter nucleus with a realistic effective interaction. The M3Y effective interaction, supplemented by a zero-range pseudo-potential for exchange term, is used to calculate the NN potential. The α decay half-lives for 317 nuclei at Z=102 120 are performed in the PCM framework with the theoretical Q values extracted from the MSller-Nix-Kratz and Liran-Marinov-Zeldes mass tables and are compared with the experimental data. The calculated results are also compared with those obtained by using Q values from the Muntian-Hofmann-Patyk-Sobiczewski and Myers-Swiatecki mass estimates.

关 键 词：preformed cluster model （PCM） α-dacay half lives super heavy nuclei mass tables 

分 类 号：O571.321[理学—粒子物理与原子核物理]