Shell-model study for GT-strengths corresponding to ${\hat{I}}^2$ decay of ${}^{60}$Ge and ${}^{62}$Ge

Abstract

In the present work, we have reported a comprehensive shell-model study of GT-strengths for recently available experimental data for ${}^{60}$Ga and ${}^{62}$Ga from RIKEN Nishina Center [Phys. Rev. C 103, 014324 (2021)] populated by ${\hat{I}}^2$ decay of the ${}^{60}$Ge and ${}^{62}$Ge, respectively. We have performed shell-model calculations in two different model spaces, the first set of calculations in the $fp$ model space using KB3G and GXPF1A interactions, while the second set in $f_{5/2}p{g}_{9/2}$ model space using JUN45 and jj44b effective interactions. Our shell-model results in $fp$ model space are in a reasonable agreement with the available experimental data.

16 pages, 5 figures, Accepted in Nuclear Physics A