Systematic Study of the Shell Effect on &alpha; Decay within Two-potential Approach

CHEN Jiulong; CHENG Junhao; DENG Jungang; LI Xiaohua

doi:10.11804/NuclPhysRev.35.04.470

In the present work, the α decay half-lives are systematically studied within the two-potentialapproach for even-even nuclei, odd-A nuclei and odd-odd nuclei. To describe the deviations between experimental half-lives and calculated results due to the nuclear shell structure, α preformation factor and hindrance factor related with α cluster preformation probability are introduced. It is consistent with our previous works[X. D. Sun et al., Phys. Rev. C 93, 034316 (2016); X. D. Sun et al., Phys. Rev. C 95, 014319 (2017); X. D. Sun et al., Phys. Rev. C 95, 044303 (2017)]. Considering the shell effect on the preformation of α and by analyzing the experimental data of the α decay half-lives, the parameters of the α preformation factor/hindrance factor correction formula are obtained. we confirm that the shell effect and the proton-neutron correlation play key roles in the α preformation where the preformation probability near the shell is less than the preformation probability far from the shell.

Systematic Study of the Shell Effect on α Decay within Two-potential Approach

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); University of South China Science Foundation for Postgraduate(2018KYY027)

Received Date: 2018-09-14

Rev Recd Date: 2018-11-05

Publish Date: 2020-05-03

Key words:

Abstract: In the present work, the α decay half-lives are systematically studied within the two-potentialapproach for even-even nuclei, odd-A nuclei and odd-odd nuclei. To describe the deviations between experimental half-lives and calculated results due to the nuclear shell structure, α preformation factor and hindrance factor related with α cluster preformation probability are introduced. It is consistent with our previous works[X. D. Sun et al., Phys. Rev. C 93, 034316 (2016); X. D. Sun et al., Phys. Rev. C 95, 014319 (2017); X. D. Sun et al., Phys. Rev. C 95, 044303 (2017)]. Considering the shell effect on the preformation of α and by analyzing the experimental data of the α decay half-lives, the parameters of the α preformation factor/hindrance factor correction formula are obtained. we confirm that the shell effect and the proton-neutron correlation play key roles in the α preformation where the preformation probability near the shell is less than the preformation probability far from the shell.

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Systematic Study of the Shell Effect on α Decay within Two-potential Approach

doi: 10.11804/NuclPhysRev.35.04.470

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Systematic Study of the Shell Effect on α Decay within Two-potential Approach

doi: 10.11804/NuclPhysRev.35.04.470

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

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Systematic Study of the Shell Effect on α Decay within Two-potential Approach

doi: 10.11804/NuclPhysRev.35.04.470

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Systematic Study of the Shell Effect on α Decay within Two-potential Approach

doi: 10.11804/NuclPhysRev.35.04.470

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

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