利用改进的Gamow-like模型研究原子核的α衰变和质子放射性  

Study of α Decay and Proton Radioactivity Half-lives Based on Improved Gamow-like Model

作　　者：程俊皓 陈玖龙 邓军刚 李小华[1] CHENG Junhao;CHEN Jiulong;DENG Jungang;LI Xiaohua(School of Nuclear Science and Technology,University of South China,Hengyang 421001,Hunan,China)

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《原子核物理评论》2020年第3期554-562,共9页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(11205083);湖南省自然科学基金资助项目(2015JJ3103,2015JJ2121);湖南省教育厅重点项目(15A159);湖南省研究生科研创新项目(CX2017B536)。

摘　　要：通过引入离心势和静电屏蔽效应对Gamow-like模型进行了改进,并将其用于α衰变和质子放射性研究,发现改进的Gamow-like模型能更好地符合实验数据。另外,还利用改进的Gamow-like模型预言了16个丰质子核的质子放射性的半衰期以及7个Z=120超重核素(^(296-308)120)α衰变链上原子核的α衰变的半衰期,为将来在大科学装置上合成和鉴别这些新核素提供重要的理论参考。In this paper,the Gamow-like model is improved by introducing centrifugal potential and electrostatic shielding,and it is used in the study of α decay and proton radioactivity.It is found that our calculations can well reproduce the experimental data.In addition,the modified Gamow-like model is used to predict the proton radioactivity half-lives of 116 proton-rich nuclei and α decay half-lives of seven even-even nuclei with Z=120(^(296-308)120) and some nuclei on their α decay chains.It will provide important theoretical references for the synthesis and identification of these new nuclides on large scientific devices in the future.

关 键 词：Α衰变 质子放射 Gamow-like模型 静电屏蔽 

分 类 号：O571.321[理学—粒子物理与原子核物理]