Structure of low and high spin states in ¹¹²Sb in interacting boson fermion fermion model

Abstract:

In this paper, properties of the low and the high spin states in ¹¹²Sb have been studied in the framework of Interacting Boson Fermion Fermion Model. A surface delta plus spin-spin type of interaction has been taken as the residual interaction between the odd neutron and the odd proton. Energy values, magnetic moments of the ground state and the isomeric 8⁻ state, E2/M1 mixing ratios of some of the low-lying transitions and log ft values for the Gamow-Teller transitions in ¹¹²Sb →¹¹²Sn and ¹¹¹Sb →¹¹¹Sn decay have been calculated and are compared with the experimental results. The band based on the configuration π g^-1 _9/2π g² _7/2⊗ν h_11/2 is obtained in this calculation by coupling the proton in the g_9/2 and the neutron in the h_11/2 orbital to the deformed band of ¹¹⁰Sn. The B(M1)/B(E2) ratios and branching ratios for the transitions in this band have also been calculated and compared with the experimental results.