Two-proton radioactivity of exotic nuclei beyond proton drip-line

作     者：Yanzhao Wang Jianpo Cui Yonghao Gao Jianzhong Gu 王艳召;崔建坡;高永浩;顾建中

作者机构：Department of Mathematics and PhysicsShijiazhuang Tiedao UniversityShijiazhuang 050043China Institute of Applied PhysicsShijiazhuang Tiedao UniversityShijiazhuang 050043China China Institute of Atomic EnergyPO Box 275(10)Beijing 102413China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2021年第73卷第7期

页      面：81-88页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：supported by the National Natural Science Foundation of China(Grants No.U1832120 and No.11675265) the Natural Science Foundation for Outstanding Young Scholars of Hebei Province of China(Grants No.A2020210012 and A2018210146) the Continuous Basic Scientific Research Project(Grant No.WDJC-2019-13) the Leading Innovation Project(Grant No.LC 192209000701) 

主　　题：2p radioactivity alpha-decay decay energies half-lives GLDM 

摘      要：To search for new candidates of the true and simultaneous two-proton(2 p)radioactivity,the 2 p decay energies(Q2 p)are extracted by the Weizs?cker–Skyrme-4(WS4)model,the finite-range droplet model(FRDM),the Koura–Tachibana–Uno–Yamada(KTUY)model and the Hartree–Fock–Bogoliubov mean-field model with the BSk29 Skyrme interaction(HFB29).Then,the 2 p radioactivity half-lives are calculated within the generalized liquid drop model by inputting the four types of Q2 *** the energy and half-life constraints,it is found that the probable 2 p decay candidates are the nuclei beyond the proton-drip line in the region of Z≤50 based on the WS4 and KTUY mass *** the FRDM mass model,the probable 2 p decay candidates are found in the region of Z≤***,the 2p-decaying candidates are predicted in the region of Z≤58 by the HFB29 mass *** means that the probable 2 p decay candidates of Z50 are only predicted by the HFB29 mass ***,the competition between the true 2p radioactivity andα-decay for the nuclei above the N=Z=50 shell closures is *** is shown that~(101)Te,~(111)Ba and~(114)Ce prefer to 2p radioactivity and the dominant decay mode of~(107)Xe and~(116)Ce isα-decay.