Two-proton radioactivity of the excited state within the Gamow-like and modified Gamow-like models

• Published in: Nuclear science and techniques Vol. 33; no. 10; pp. 1 - 10
• Main Authors: Zhu, De-Xing, Xu, Yang-Yang, Liu, Hong-Ming, Wu, Xi-Jun, He, Biao, Li, Xiao-Hua
• Format: Journal Article
• Language: English
• Published: Singapore Springer Nature Singapore 01.10.2022; Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment,University of South China,Hengyang 421001,China; School of Nuclear Science and Technology,University of South China,Hengyang 421001,China%Institute of Modern Physics,Fudan University,Shanghai 200433,China%School of Math and Physics,University of South China,Hengyang 421001,China%College of Physics and Electronics,Central South University,Changsha 410083,China%School of Nuclear Science and Technology,University of South China,Hengyang 421001,China; National Exemplary Base for International Sci&Tech.Collaboration of Nuclear Energy and Nuclear Safety,University of South China,Hengyang 421001,China; Key Laboratory of Low Dimensional Quantum Structures and Quantum Control,Hunan Normal University,Changsha 410081,China
• Subjects: Beam Physics; Nuclear Energy; Particle Acceleration and Detection; Particle and Nuclear Physics; Physics; Physics and Astronomy; Half-life; radioactivity; Gamow-like model; Excited state; 2p radioactivity
• ISSN: 1001-8042; 2210-3147
• DOI: 10.1007/s41365-022-01116-9

In this study, we systematically investigated the two-proton ( 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 45 , 124105 (2021)], effective liquid drop model, and generalized liquid drop model [Acta Phys. Sin 71 , 062301 (2022)]. Furthermore, utilizing the GLM and MGLM, we predicted the 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 2p and ℓ .