A unified description of shape coexistence and mixed-symmetry states in^98Mo using IBM-2  

作　　者：Cheng-Fu Mu Da-Li Zhang 穆成富;张大立(Department of physics,Huzhou University,Huzhou 313000,Zhejiang,China)

机构地区：[1]Department of physics,Huzhou University,Huzhou 313000,Zhejiang,China

出　　处：《Communications in Theoretical Physics》2020年第5期65-69,共5页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11947410;11147148 and U1832139;the Natural Science Foundation of Zhejiang Province under grant No.LY19A050002.1。

摘　　要：Level structure and electromagnetic transitions in^98Mo have been investigated on the basis of the proton-neutron interacting boson model(IBM-2)by considering the energy difference between neutron bosonενand proton bosonεπ.The results are compared with the recent experimental data and it is observed that they are in good agreement.In particular,the strongest M1 transition from 25^+state to 22^+can be well reproduced,from which one can determine the 25^+as an mixed-symmetry(MS)state.We have calculated the electric monopole strengthρ^2(E0,02^+→01^+),and our result agrees with the experimental one.The calculation indicates that shape coexistence and MS states are simultaneously well described using IBM-2.

关 键 词：shape coexistence mixed-symmetry state IBM-2 E2 and M1 transitions 

分 类 号：O413.1[理学—理论物理]