Theoretical studies on α-decay half-lives of N=125, 126, and 127 isotones

被引：23

作者：

Wang, Zhen ^{[1
]}

Ren, Zhongzhou ^{[1
,2
]}

Bai, Dong ^{[1
]}

机构：

[1] Tongji Univ, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China

[2] Minist Educ, Key Lab Adv Microstruct Mat, Shanghai 200092, Peoples R China

来源：

PHYSICAL REVIEW C | 2020年 / 101卷 / 05期

基金：

中国国家自然科学基金; 中国博士后科学基金; 国家重点研发计划;

关键词：

MEDIUM-MASS; SHELL; WIDTH;

D O I：

10.1103/PhysRevC.101.054310

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 alpha decays of exotic N = 125, 126, and 127 isotones, including two new isotopes Np-219 [Phys. Lett. B 777, 212 (2018)] and Np-220 [Phys. Rev. Lett. 122, 192503 (2019)], are studied by using the improved Buck-Merchant-Perez cluster model with the charge-dependent alpha-preformation factors. The experimental half-lives of alpha decays varying from 2.50 x 10(-5 )to 6.00 x 10(26) s are reproduced within a factor of approximate to 2. Noticeably, the theoretical alpha-decay half-lives of the new isotopes Np-219,Np-220 are also in good agreement with the experimental data. Furthermore, the alpha-decay half-lives of some undiscovered N = 125, 126 and 127 isotones are predicted, which could be useful for future experimental studies on the robustness of the magic number N = 126.

引用

页数：8

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