The nuclear deformation and the preformation factor in the α-decay of heavy and superheavy nuclei

被引：49
|
作者：
Guo, Shuqing [1 ]
Bao, Xiaojun [1 ]
Gao, Yuan [1 ,3 ]
Li, Junqing [1 ,2 ]
Zhang, Hongfei [1 ]
机构：
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[3] Hangzhou Dianzi Univ, Sch Informat Engn, Hangzhou 310018, Zhejiang, Peoples R China
来源：
NUCLEAR PHYSICS A | 2015年 / 934卷
基金：
中国国家自然科学基金;
关键词：
alpha-decay; Preformation factor; Nuclear deformation; Superheavy nuclei; HARTREE-BOGOLIUBOV THEORY; HALF-LIVES; SHELL; PARTICLES; EMISSION;
D O I：
10.1016/j.nuclphysa.2014.12.001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The potential barrier for a-decay is constructed using a generalized liquid drop model (GLDM) by taking into account the mass and charge asymmetry, and the proximity energy. Further considering the deformation of the daughter nucleus, the alpha-decay half-lives of 158 even even nuclei from Z = 62 to Z = 118 are systematically studied and an analytic expression for a particle preformation is proposed, which turns out to produce accurate results and show shell structure. Some predictions are made for the very neutron-deficient and superheavy nuclei (SHN) where the experimental values are absent from the NUBASE2012 table. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：110 / 120
页数：11
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