The total β-decay energies of the three isomers of ${}_{}{}^{130}{}_{}{}^{}\mathrm{In}$ have been studied. The ground state $Q_{\beta }$ was determined to be 10.12±0.18 MeV resulting in a mass excess of -70.05±0.20 MeV for ${}_{}{}^{130}{}_{}{}^{}\mathrm{In}$. The relative excitation energies of the three β-decaying isomers have been determined, resulting in the first level scheme information for the ${\pi }^{\mathrm{-}1}$${\nu }^{\mathrm{-}1}$ nucleus neighboring ${}_{}{}^{132}{}_{}{}^{}\mathrm{Sn}$. Arguments on β- and γ-ray selection rules permit unique assignments of $J^{\pi }$${=1\mathrm{}}^{\mathrm{-}}$ and $5^{+}$, respectively, for the low and medium spin isomers of ${}_{}{}^{130}{}_{}{}^{}\mathrm{In}$.

• Received 11 October 1984

DOI:https://doi.org/10.1103/PhysRevC.31.1026