Further monopole effects in neutron-rich Sb isotopes  

作　　者：王韩奎 孙雨乐 蒋博文 曾凡斐 柳敏良 Han-Kui Wang;Yu-Le Sun;Bo-Wen Jiang;Fan-Fei Zeng;Min-Liang Liu(Department of Physics,Zhejiang SCI-TECH University,Hangzhou 310018,China;School of Physics,Xi'an Jiaotong University,Xi'an 710049,China;Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science,Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China;School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]Department of Physics,Zhejiang SCI-TECH University,Hangzhou 310018,China [2]School of Physics,Xi'an Jiaotong University,Xi'an 710049,China [3]Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science,Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [4]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China [5]School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Chinese Physics C》2024年第1期138-143,共6页中国物理C（英文版）

基　　金：supported by the National Natural Science Foundation of China(U2267205);Research at IMP is supported by the National Natural Science Foundation of China(U2032211,12075287);Research at SJTU is supported by the China and Germany Postdoctoral Exchange Fellowship Program 2019 from the office of China Postdoctoral Council(20191024)。

摘　　要：The level spectra of neutron-rich Sb isotopes have been investigated within a shell-model space containing cross-shell excitations and the intruder orbit i_(13/2).High-spin levels(27/2^(-))and(29/2^(-))in 135 Sb are taken over by the monopole effect induced by orbit i_(13/2).The ground state and excited levels in ^(136)Sb are well improved by considering the monopole correction between neutron orbits f_(7/2) and h_(9/2).The energy shrinking of the first excited state 5/2^(+)in ^(135,137)Sb isotopes is explained by theπd_(5/2) shift due to the attractiveπd5/2νf_(7/2) monopole interaction when increasingly more neutrons occupy orbit f_(7/2).The ground state of ^(139)Sb is predicted as 5/2^(+)owing to the shrinking of the 5/2^(+)states in Sb isotopes that causes ground state inversion when N=88.Further monopole effects extend the applicable range of the present Hamiltonian to nuclei with more neutrons above the N=82 shell.This Hamiltonian will be public,and researchers are encouraged to contact the authors.

关 键 词：level spectra neutron rich monopole effects ground state prediction 

分 类 号：O572[理学—粒子物理与原子核物理]