Systematic study of α decay half-lives of doubly odd nuclei within the two-potential approach

Xiao-Dong Sun, Jun-Gang Deng, Dong Xiang, Ping Guo, and Xiao-Hua Li
Phys. Rev. C 95, 044303 – Published 3 April 2017

Abstract

α decay is a common and important process of natural radioactivity of the heavy and superheavy nuclei. From the α decay of nuclei, we can obtain much more information of nuclei structure. In 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)], we have done systematic study on the α preformation probability of both the even-even and odd-A nuclei within the two-potential approach. The α preformation probabilities will systematically change due to the shell effect, proton-neutron correlation, and so on. This work is the extension of the previous works. In this work, we systematically study the α decay of doubly odd nuclei. We find that for superallowed α decay the α preformation probabilities of doubly odd nuclei are larger than those of odd-A ones in general, and for the heavier nuclei the extra neutrons suppress the proton-neutron correlation resulting in the small α preformation probabilities. The calculated results can well reproduce the experimental half-lives. The half-lives of the α decay chain beginning from nuclide 119296 are also predicted and compared with various empirical formulas.

  • Figure
  • Figure
  • Received 22 January 2017

DOI:https://doi.org/10.1103/PhysRevC.95.044303

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Xiao-Dong Sun1, Jun-Gang Deng2, Dong Xiang2,*, Ping Guo1, and Xiao-Hua Li2,3,4,†

  • 1School of Math and Physics, University of South China, 421001 Hengyang, People's Republic of China
  • 2School of Nuclear Science and Technology, University of South China, 421001 Hengyang, People's Republic of China
  • 3Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, 421001 Hengyang, People's Republic of China
  • 4Key Laboratory of Low Dimensional Quantum Structures and Quantum Control, Hunan Normal University, 410081 Changsha, People's Republic of China

  • *xiangdong007@163.com
  • lixiaohuaphysics@126.com

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Vol. 95, Iss. 4 — April 2017

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