Description of the Rigid Triaxial Deformation at Low Energy in 76Ge with the Proton-Neutron Interacting Model IBM2

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2013,（12）
• 页码范围: 21-24
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/30/12/122101

摘要

We investigate properties of the low-lying energy states for 76 Ge within the framework of the proton-neutron interacting model IBM2,considering the validity of the Z =38 subshell closure 88Sr50 as a doubly magic core.By introducing the quadrupole interactions among like bosons to the IBM2 Hamiltonian,the energy levels for both the ground state and γ bands are reproduced well.Particularly,the doublet structure of the γ band and the energy staggering signature fit the experimental data correctly.The ratios of B(E2) transition strengths for some states of the γ band,and the g factors of the 2+1,2+2 states are very close to the experimental data.The calculation result indicates that the nucleus exhibiting rigid triaxial deformation in the low-lying states can be described rather well by the IBM2.