Beta- and Gamma-Ray Spectra ofPd111

Beta rays of 2.18 Mev and gamma rays of 0.377, 0.580, 0.620, 0.810, 1.380, and 1.450 Mev were found in the decay of the 22-minute isomer of ${\mathrm{Pd}}^{111}$. Beta rays of 2.02 Mev and gamma rays of 0.170 and 1.690 Mev were found associated with the 5.5-hour isomer. Although the beta-ray groups may both represent the decay of the 22-minute state, the dissimilarity of the gamma-ray spectra implies some degree of beta-ray branching from the 5.5-hour state.