Reduced Shell Model Calculations of ¹¹¹Sb and ¹¹²Sb

The low-lying states of the mid-heavy odd--even ¹¹¹Sb and odd--odd ¹¹²Sb isotopes are calculated for the first time within the shell model framework. The shell model calculations have been carried out within the reduced model space including the single particle orbits 1d _5/2, 0g _7/2, 1d _3/2, 2s _1/2. We obtain the energy spectra for the ¹¹¹Sb and ¹¹²Sb isotopes in the reduced model space by using CD-Bonn two-body effective nucleon-nucleon interaction. The energy spectra are compared to the experimental results to give some discussion about the low-lying states of ¹¹¹Sb and ¹¹²Sb.