Chinese Physics C > 2022, Vol. 46 > Issue(4): 044106 DOI: 10.1088/1674-1137/ac45ef

Two-proton radioactivity within Coulomb and proximity potential model

1.
School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
2.
National Exemplary Base for International Sci & Tech. Collaboration of Nuclear Energy and Nuclear Safety, University of South China, Hengyang 421001, China
3.
Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang 421001, China
4.
School of Math and Physics, University of South China, Hengyang 421001, China
5.
Institute of Theoretical Physics, School of Science, Qingdao Technological University, Qingdao 266000, China

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Abstract：
Considering the preformation probability of the two emitted protons in the parent nucleus, we extend the Coulomb and proximity potential model (CPPM) to systematically study two-proton (2 p) radioactivity half-lives of the nuclei close to proton drip line. The proximity potential chosen is Prox. 81 proposed by Blocki et al. in 1981. Furthermore, we apply this model to predict the half-lives of possible 2 pradioactive candidates whose 2 pradioactivity is energetically allowed or observed but not yet quantified in the evaluated nuclear properties table NUBASE2016. The predicted results are in good agreement with those from other theoretical models and empirical formulas, namely the effective liquid drop model (ELDM), generalized liquid drop model (GLDM), Gamow-like model, Sreeja formula and Liu formula.
- two-proton radioactivity,
- Coulomb and proximity potential model,
- half-life

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Two-proton radioactivity within Coulomb and proximity potential model

Abstract：

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