Roles of tensor force and pairing correlation in two-proton radioactivity of halo nuclei  

作　　者：王艳召 邢凤竹 崔建坡 高永浩 顾建中 Yan-Zhao Wang;Feng-Zhu Xing;Jian-Po Cui;Yong-Hao Gao;Jian-Zhong Gu(Department of Mathematics and Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Institute of Applied Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]Department of Mathematics and Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China [2]Institute of Applied Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China [3]China Institute of Atomic Energy,Beijing 102413,China

出　　处：《Chinese Physics C》2023年第8期39-53,共15页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(U1832120,11675265);the Natural Science Foundation for Outstanding Young Scholars of Hebei Province,China(A2020210012);the Natural Science Foundation of Hebei Province,China(A2021210010);the Key Laboratory of High Precision Nuclear Spectroscopy,Institute of Modern Physics,Chinese Academy of Sciences(IMPKFKT2021002);the Graduate Student Innovative Research Project of Shijiazhuang Tiedao University(YC2022062);the Continuous Basic Scientific Research Project(WDJC-2019-13);the Leading Innovation Project(LC 192209000701).

摘　　要：The tensor force and pairing correlation effects on the two-proton radioactivity of^(18)Mg and^(20)Si with a pronounced two-proton halo are explored in the framework of spherical Skyrme-Hartree-Fock-Bogoliubov theory.It is shown that the halo sizes are enhanced with the increase in the strength of the tensor force and pairing correlation.Furthermore,the increasing halo sizes lead to the enhancement of diproton emission.Then,the tensor force is found to have a small influence on the two-proton decay energies,and the two-proton decay energies calculated with strong surface pairing are smaller than those with weak mixed pairing.Because the two-proton decay energies are relat-ively large,the predicted order of magnitude of half-lives within the effective liquid drop model is not sensitive to the decay energy variation caused by the tensor force and pairing correlation,which has a value of approximately 10^(-18)s.

关 键 词：tensor force pairing correlation two-proton halo two-proton radioactivity Skyrme-Hartree-Fock-Bogoliubov theory 

分 类 号：O571.422[理学—粒子物理与原子核物理]