Abstract
In this study, we systematically investigated the two-proton (\(\text {2p}\)) radioactivity half-lives from the excited state of nuclei near the proton drip line within the Gamow-like model (GLM) and modified Gamow-like model (MGLM). The calculated results were highly consistent with the theoretical values obtained using the unified fission model [Chin. Phys. C \({\textbf {45}}\), 124105 (2021)], effective liquid drop model, and generalized liquid drop model [Acta Phys. Sin \({\textbf {71}}\), 062301 (2022)]. Furthermore, utilizing the GLM and MGLM, we predicted the \(\text {2p}\) radioactivity half-lives from the excited state for some nuclei that are not yet available experimentally. Simultaneously, by analyzing the calculated results from these theoretical models, it was found that the half-lives are strongly dependent on \(Q_\text {2p}\) and \(\ell \).
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by De-Xing Zhu, Yang-Yang Xu, Hong-Ming Liu, Xi-Jun Wu, Biao He and Xiao-Hua Li. The first draft of the manuscript was written by De-Xing Zhu, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This work was supported by the National Natural Science Foundation of China (Nos. 12175100 and 11975132), the Construct Program of the Key Discipline in Hunan Province, the Research Foundation of the Education Bureau of Hunan Province, China (No. 18A237), the Natural Science Foundation of Hunan Province, China (No. 2018JJ2321), the Innovation Group of Nuclear and Particle Physics in USC, the Opening Project of the Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China (No. 2019KFZ10).
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Zhu, DX., Xu, YY., Liu, HM. et al. Two-proton radioactivity of the excited state within the Gamow-like and modified Gamow-like models. NUCL SCI TECH 33, 122 (2022). https://doi.org/10.1007/s41365-022-01116-9
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DOI: https://doi.org/10.1007/s41365-022-01116-9