Systematic Study of &alpha; Decay of Nuclei Around <em>Z</em>=82, <em>N</em>=126 Shell Closures within the Cluster-formation Model

DENG Jungang; CHENG Junhao; CHEN Jiulong; LI Xiaohua

doi:10.11804/NuclPhysRev.35.04.463

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 decay half-lives to experimental data. Combining with our previous works, we confirm that the P_α is linearly dependent on the N_pN_n for nuclei around Z=82, N=126 shell closures. In addition, the valance proton-neutron interaction plays a key role in the α preformation.

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

School of Nuclear Science and Technology, University of South China, Hengyang 421001, Hunan, China

Funds: National Natural Science Foundation of China (11205083); Natural Science Foundation of Hunan Province, China (2015JJ3103, 2015JJ2121); Research Foundation of Education Bureau of Hunan Province, China (15A159); Hunan Provincial Innovation Foundation For Postgraduate (CX2017B536); University of South China Science Foundation for Postgraduate (2018KYY027)

Received Date: 2018-09-08

Rev Recd Date: 2018-11-11

Publish Date: 2020-05-03

Key words:

Abstract: 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 decay half-lives to experimental data. Combining with our previous works, we confirm that the P_α is linearly dependent on the N_pN_n for nuclei around Z=82, N=126 shell closures. In addition, the valance proton-neutron interaction plays a key role in the α preformation.

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

doi: 10.11804/NuclPhysRev.35.04.463

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通讯作者: 陈斌, bchen63@163.com

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

doi: 10.11804/NuclPhysRev.35.04.463

School of Nuclear Science and Technology, University of South China, Hengyang 421001, Hunan, China

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

doi: 10.11804/NuclPhysRev.35.04.463

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

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

doi: 10.11804/NuclPhysRev.35.04.463

School of Nuclear Science and Technology, University of South China, Hengyang 421001, Hunan, China

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