Competition between α decay and cluster radioactivity for superheavy nuclei with a universal decay-law formula

被引:17
|
作者
Bao, Xiao Jun [1 ]
Zhang, Hai Fei [1 ]
Dong, Jian Min [2 ,3 ,4 ,5 ,6 ]
Li, Jun Qing [1 ,4 ,5 ,6 ]
Zhang, Hong Fei [1 ,2 ,3 ,5 ,6 ]
机构
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Res Ctr Nucl Sci & Technol, Lanzhou 730000, Peoples R China
[3] Inst Modern Phys CAS, Lanzhou 730000, Peoples R China
[4] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[5] Chinese Acad Sci, KITPC, Beijing 100190, Peoples R China
[6] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
来源
PHYSICAL REVIEW C | 2014年 / 89卷 / 06期
关键词
SPONTANEOUS EMISSION;
D O I
10.1103/PhysRevC.89.067301
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
A recent proposed universal decay law (UDL) for alpha-decay and cluster radioactivity (CR) half-lives [C. Qi, F. R. Xu, R. J. Liotta, and R. Wyss, Phys. Rev. Lett 103, 072501 (2009)] that can accurately reproduce the experimental data was introduced starting from alpha-like R-matrix theory. The UDL formula depends only on the mass and charge numbers of the charged particle and the Q value. The new mass table AME2012 and the theoretical FRDM95, KTUY05, and WS2011 masses are used to determine the Q values. We systematically investigate the branching ratios of cluster radioactivity with respect to a decay for even-even superheavy nuclei (SHN) with Z = 104-120 using the UDL formula. It is found that cluster radioactivity can be compared to alpha decay in neutron-rich SHN.
引用
收藏
页数:5
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