The levels in ${}_{}{}^{134}{}_{}{}^{}\mathrm{Xe}$ were investigated from the decay of 53-min ${}_{}{}^{134}{}_{}{}^{}\mathrm{I}$ by means of Ge(Li) $\gamma$-ray spectrometry. From $\gamma$-ray energy and intensity measurements employing a high-resolution Ge(Li) detector, and from coincidence relationships determined by $\gamma -\gamma$ coincidence measurements using two Ge(Li) detectors, it was established that levels at 846.95, 1613.4, 1731.0, 1919.8, 2136.3, 2271.7, 2303.0, 2352.8, 2408.5, 2547.4, 2588.1, 2653.1, 2773.4, 2867.3, 3084.3, 3256.0, 3300.8, 3314.4, 3359.9, 3375.3, 3475.6, and 3493.0 keV are populated in the decay of ${}_{}{}^{134}{}_{}{}^{}\mathrm{I}$. Possible levels at 2704.7, 3160.4, 3190.0, 3463.1, 3790.3, and 3874.5 keV are discussed on the basis of energy sums. From the $log\mathrm{ft}$ values obtained, limits for the $J^{\pi }$ values of many levels in ${}_{}{}^{134}{}_{}{}^{}\mathrm{Xe}$ were placed. No evidence for the population of the $7^{-}$ isomer of ${}_{}{}^{134}{}_{}{}^{}\mathrm{Xe}$ was found in ${}_{}{}^{134}{}_{}{}^{}\mathrm{I}$ decay.

• Received 2 January 1969

DOI:https://doi.org/10.1103/PhysRev.184.1188