New information is presented on the decay of 40-s ${}_{}{}^{132}{}_{}{}^{}\mathrm{Sn}$ to levels of odd-odd ${}_{}{}^{132}{}_{}{}^{}\mathrm{Sb}$. A second ${\beta }^{\mathrm{-}}$-fed $1^{+}$ level was identified in ${}_{}{}^{132}{}_{}{}^{}\mathrm{Sb}$; it lies at an energy of 2268 keV and is fed by a relatively strong 0.83% ${\beta }^{\mathrm{-}}$-decay branch. Four γ rays were identified that form a weakly populated cascade from a level at 483 keV. Coincidence data demonstrate that the 254-keV level in this cascade is the 102-ns isomer identified previously by Clark et al. A 96-keV, isomeric γ ray has been assigned to the decay of the 4.1-min, $8^{\mathrm{-}}$ isomer in ${}_{}{}^{132}{}_{}{}^{}\mathrm{Sb}$. It may also be the 96-keV transition that is associated with the 1.8-μs isomer identified in the A=132 chain by Clark et al. The splitting of the levels in the proton-neutron multiplets is discussed and compared with the results of several recent shell-model calculations.

• Received 7 November 1988

DOI:https://doi.org/10.1103/PhysRevC.39.1963