Symmetric and asymmetric structural evolutions of Te isotopes across the N=82 shell closure  

作　　者：Hui Jiang Yi-jie Zhou Yang Lei Jia-Jie Shen Man Bao 姜慧;周熠杰;雷杨;沈佳杰;鲍曼(School of Arts and Sciences,Shanghai Maritime University,Shanghai 201306,China;School of National Defense Science and Technology,Southwest University of Science and Technology,Mianyang 621010,China;Department of Physics,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]School of Arts and Sciences,Shanghai Maritime University,Shanghai 201306,China [2]School of National Defense Science and Technology,Southwest University of Science and Technology,Mianyang 621010,China [3]Department of Physics,University of Shanghai for Science and Technology,Shanghai 200093,China

出　　处：《Chinese Physics C》2021年第9期148-156,共9页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (11875188, 11905130 and 12075169);Sichuan Science and Technology Program (2019JDRC0017);the Doctoral Program of Southwest University of Science and Technology (18zx7147);Shanghai Sailing Program (19YF1434200)。

摘　　要：Systematic calculations of low-lying energy levels,B(E2)transitions,and g factors of even-even tellurium isotopes with mass numbers from 128 to 140 are performed via the nucleon-pair approximation(NPA)of the shell model with phenomenological multipole-multipole interactions.An optimal agreement is obtained between the calculated results and experimental data.The yrast band structures of nuclei below and above the N=82 shell closure are compared and discussed.In particular,the evolutionary differences of B(E2;2^(+)_(1)→0^(+)_(1))values and g(2^(+)_(1))factors,with respect to the symmetry of N=82,are attributed to the dominant contribution differences in neutron and proton excitations,respectively.

关 键 词：electromagnetic moments collective levels SHELL-MODEL 90≤A≤149 

分 类 号：O571[理学—粒子物理与原子核物理]