Radioactive decay of 9.2-minIm130to levels ofXe130

The $\gamma$-ray transitions following the decay of 9.2-min ${}_{}{}^{130}{}_{}{}^{}\mathrm{I}_{}^m{}_{}{}^{}$ have been measured using Ge(Li) Compton-suppressed $\gamma$-ray spectrometry. Three new levels in ${}_{}{}^{130}{}_{}{}^{}\mathrm{Xe}$ have been proposed at 2762.6, 2644.9, and 2307.8 keV and new $\beta$ branches observed to four levels at 1632.6, 2385.5, 2544.4, and 2637.5 keV. The results are compared with those of other recent studies and the difficulties of finding an adequate theoretical description discussed.