Shell-model treatment of the $\beta$ decay of ${}^{99}$Tc

Marlom Ramalho, Jouni Suhonen

In the present paper we treat the second-forbidden non-unique (2nd-nu) ground-state-to-ground-state ${\beta }^{-}$ decay ${}^{99}\text{Tc}(9/2^{+})\to {}^{99}\text{Ru}(5/2^{+})$, with a 100$\%…