Journal
CHINESE PHYSICS C
Volume 45, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1137/abd01e
Keywords
two-proton radioactivity; Geiger-Nuttall law; empirical formula
Categories
Funding
- National Natural Science Foundation of China [11205083, 11505100, 11705055]
- Construct Program of the Key Discipline in Hunan Province
- Research Foundation of Education Bureau of Hunan Province, China [15A159, 18A237]
- Natural Science Foundation of Hunan Province, China [2015JJ3103, 2015JJ2121, 2018JJ2321]
- Innovation Group of Nuclear and Particle Physics in USC
- Shandong Province Natural Science Foundation, China [ZR2015AQ007]
- Hunan Provincial Innovation Foundation For Postgraduate [CX20200909]
- National Innovation Training Foundation of China [201910555161]
- 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, a new two-parameter empirical formula based on the Geiger-Nuttall law is proposed to study two-proton radioactivity. The calculated results are in good agreement with experimental data and results obtained using other theoretical models, demonstrating the effectiveness of the formula in predicting half-lives of 2p radioactivity candidates.
In the present work, a two-parameter empirical formula is proposed, based on the Geiger-Nuttall law, to study two-proton (2p) radioactivity. Using this formula, the calculated 2p radioactivity half-lives are in good agreement with the experimental data as well as with calculated results obtained by Goncalves et al. [Phys. Lett. B 774, 14 (2017)] using the effective liquid drop model (ELDM), Sreeja et al. [Eur. Phys. J. A 55, 33 (2019)] using a four-parameter empirical formula, and Cui et al. [Phys. Rev. C 101: 014301 (2020)] using a generalized liquid drop model (GLDM). In addition, this two-parameter empirical formula is extended to predict the half-lives of 22 possible 2p radioactivity candidates with 2p radioactivity released energy Q(2p) > 0, obtained from the latest evaluated atomic mass table AME2016. The predicted results are highly consistent with those obtained using other theoretical models such as the ELDM, GLDM and four-parameter empirical formula.
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