期刊论文

Systematic Study of α Decay of Nuclei Around Z = 82, N = 126 Shell Closures within the Cluster-formation Model

中文

原子核物理评论

1007-4627

2018

35

4

463-469

10.11804/NuclPhysRev.35.04.463

11205083:国家自然科学基金 2015JJ3103:湖南省自然科学基金 2015JJ2121:湖南省自然科学基金 15A159:湖南省教育厅重点项目 CX2017B536:湖南省研究生科研创新项目 2018KYY027:南华大学研究生科学基金资助项目

本校为第一机构

基于结团形成模型(cluster-formation model, CFM)系统地研究了质子数Z = 82,中子数N = 126闭壳附近的α衰变母核的α衰变预形成因子P_α 。计算结果表明:基于结团形成模型计算得到的P_α线性地依赖于价质子(空穴)N_p和价中子(空穴)N_n的乘积。这与前期工作[SUN X D, et al. Phys Rev C, 2016, 94(2):024338; DENG J G, et al. Phys Rev C, 2017, 96(2):024318]得到的结论是一致的,其中,P_α是唯象的且模型依赖的,从α衰变半衰期的理论值和实验值的比值中提取。结合前期工作可以得到这样的结论:对于Z=82,N=126闭壳附近的α衰变母核,其P_α与N_p N_n呈线性关系,且价质子-价中子相互作用在α结团预...

In the present work, the α decay preformation factors P_α are systematically studied within the cluster-formation model (CFM) for nuclei around Z=82, N=126 closed shells. The calculations show that the P_α calculated by CFM is linearly dependent on the product of valance protons (holes) and valance neutrons (holes) N_p N_n . It is consistent with our previous works [SUN X D, et al. Phys Rev C, 2016, 94(2):024338; DENG J G, et al. Phys Rev C, 2017, 96(2):024318], which P_α are model-dependent and extracted from the ratios of calculated α de...