On the structure of isomeric state in neutron-rich 108Zr: A projected shell model analysis  

作　　者：LIU YanXin YU ShaoYing SUN Yang 

机构地区：[1]School of Science, Huzhou University [2]Department of Physics and Astronomy, Shanghai Jiao Tong University [3]IFSA Collaborative Innovation Center, Shanghai Jiao Tong University [4]State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2015年第11期92-98,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11305059,11275067,11135005,11275068 and 11475062);the National Program on Key Basic Research Project(Grant No.2013CB834401);the Open Project Program of State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences(Grant No.Y5KF141CJ1)

摘　　要：Inspired by the recent experimental identification of the new isomer with a half-life of （620±150） ns in the very neutron-rich nucleus 180SZr, we apply the projected shell model with axially-deformed bases to discuss possible shapes near the ground state and the nature of the isomer. The structure of the new isomer is investigated by restricting the calculation to prolate and oblate shapes. It is shown that the isomer can be understood as a K-isomer. Meanwhile, the calculation predicts more low-lying high-K configurations, which may be confirmed by future experiments,Inspired by the recent experimental identification of the new isomer with a half-life of(620±150) ns in the very neutron-rich nucleus 108 Zr, we apply the projected shell model with axially-deformed bases to discuss possible shapes near the ground state and the nature of the isomer. The structure of the new isomer is investigated by restricting the calculation to prolate and oblate shapes. It is shown that the isomer can be understood as a K-isomer. Meanwhile, the calculation predicts more low-lying high-K configurations, which may be confirmed by future experiments.

关 键 词：K isomer shape isomer prolate shape oblate shape projected shell model 

分 类 号：O571.5[理学—粒子物理与原子核物理]