Systematic study on the proton radioactivity of spherical proton emitters  

作　　者：Dong-Meng Zhang Lin-Jing Qi De-Xing Zhu Yang-Yang Xu Song Luo Xiao-Hua Li 

机构地区：[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]Key Laboratory of Low Dimensional Quantum Structures and Quantum Control,Hunan Normal University,Changsha 410081,China

出　　处：《Nuclear Science and Techniques》2023年第4期93-101,共9页核技术（英文）

基　　金：supported in part 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 Education Bureau of Hunan Province,China(Nos. 21B0402 and 18A237);the Natural Science Foundation of Hunan Province, China(No. 2018JJ2321);the Innovation Group of Nuclear and Particle Physics in USC, the Shandong Province Natural Science Foundation, China(No. ZR2022JQ04);the Hunan Provincial Innovation Foundation for Postgraduates(No.CX20220993);the Opening Project of Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment,University of South China(No. 2019KFZ10)。

摘　　要：In this study, based on a two-potential approach, we systematically investigated the proton radioactivity half-lives of spherical proton emitters with 69≤Z≤81 from the ground and/or isomeric state, choosing the nuclear potential to be a modified Woods–Saxon potential that contains the isospin effect of the daughter nucleus. It was found that the calculated half-lives could reproduce the experimental data well. Furthermore, we extended this model to predict the half-lives of 17 protonemitting candidates whose radioactivity is energetically allowed or observed but not yet quantified in NUBASE2020. For comparison, the unified fission model, Coulomb potential and proximity potential model, universal decay law for proton emission, and new Geiger–Nuttall law were also used. All the predicted results are consistent with each other.

关 键 词：Proton radioactivity Spherical nuclei Two-potential approach Modified Woods–Saxon potential HALF-LIVES 

分 类 号：O571.422[理学—粒子物理与原子核物理]