Eur. Phys. J. A (2020) 56: 273
https://doi.org/10.1140/epja/s10050-020-00280-z

Regular Article –Theoretical Physics

Systematic study of proton radioactivity of spherical proton emitters with Skyrme interactions

¹ School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China
² Nuclear Power Institute of China, Chengdu, 610041, China
³ Cooperative Innovation Center for Nuclear Fuel Cycle Technology and 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
⁵ Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China
⁶ School of Science, Qingdao Technological University, Qingdao, 266000, China

^* e-mail: lixiaohuaphysics@126.com

Received: 16 March 2020
Accepted: 13 October 2020
Published online: 26 October 2020

Abstract

Proton radioactivity is an important and common process of the natural radioactivity of proton-rich nuclei. In our previous work (Cheng et al. in Nucl Rhys A 997: 121717, 2020), we systematically studied the proton radioactivity half-lives of $$53\le Z \le 83$$ nuclei within the two-potential approach with Skyrme–Hartree–Fock. The calculations can well reproduce the experimental data of spherical nuclei. The present work is an extension of the previous work. We systematically study 32 proton radioactivity half-lives of spherical nuclei with the two-potential approach with Skyrme–Hartree–Fock (TPA-SHF) within 115 different versions of the Skyrme interactions. The calculated results indicate that the SLy7 Skyrme interaction gives the lowest r.m.s. deviation in the description of the experimental data of the spherical proton emitters among all the different versions of the Skyrme interactions. In addition, we use this model with the SLy7 Skyrme interaction to predict the proton radioactivity half-lives of 7 spherical nuclei in the same region, whose proton radioactivity is energetically allowed or has been observed but is not yet quantified.