The 83.6-min isomer of ${}_{}{}^{132}{}_{}{}^{}\mathrm{I}$ has been produced both by fission of uranium with medium-energy (30-85 MeV) protons and by the reaction ${}_{}{}^{130}{}_{}{}^{}\mathrm{Te}(\alpha ,pn){}_{}{}^{132}{}_{}{}^{}\mathrm{I}$, using tellurium enriched in mass 130. The isomeric transition is by a 98-keV $\gamma$ ray (86%), the remainder decaying by ${\beta }^{-}$ emission to levels in ${}_{}{}^{132}{}_{}{}^{}\mathrm{Xe}$. Three new levels, viz. 2650.1 ± 0.9, 2829.1 ± 0.9, and 2960.1 ± 1.2 keV in ${}_{}{}^{132}{}_{}{}^{}\mathrm{Xe}$ have been found. A decay scheme for ${}_{}{}^{132}{}_{}{}^{}\mathrm{I}_{}^m{}_{}{}^{}$ is presented.

RADIOACTIVITY ${}_{}{}^{132}{}_{}{}^{}\mathrm{I}_{}^m{}_{}{}^{}$; produced in medium-energy proton fission ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$ and reaction ${}_{}{}^{130}{}_{}{}^{}\mathrm{Te}(\alpha ,pn)$, measured $T_{\frac{1}{2}}$, IT, ${}_{}{}^{132}{}_{}{}^{}\mathrm{Xe}$ deduced levels, decay scheme ${}_{}{}^{132}{}_{}{}^{}I_{}^m{}_{}{}^{}$.

• Received 7 February 1974

DOI:https://doi.org/10.1103/PhysRevC.10.1172