Journal
CHINESE PHYSICS C
Volume 46, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1137/ac45ef
Keywords
two-proton radioactivity; Coulomb and proximity potential model; half-life
Categories
Funding
- National Natural Science Foundation of China [12175100, 11975132]
- Construct Program of the Key Discipline in Hunan Province
- Research Foundation of Education Bureau of Hunan Province, China [18A237]
- Natural Science Foundation of Hunan Province, China [2015JJ3103, 2018JJ2321]
- Innovation Group of Nuclear and Particle Physics in USC
- Shandong Province Natural Science Foundation, China [ZR2019YQ01]
- Hunan Provincial Innovation Foundation For Postgraduate [CX20210942]
- Opening Project of Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China [2019KFZ10]
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In this study, we systematically investigate the two-proton (2p) radioactivity half-lives of nuclei near the proton drip line, considering the preformation probability of the emitted protons. We extend the Coulomb and proximity potential model (CPPM) and apply it to predict the half-lives of potential 2p radioactive candidates. The predicted results are in good agreement with those from other theoretical models and empirical formulas.
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 (2p) 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 2p radioactive candidates whose 2p radioactivity 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.
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