Structure of neutron-rich even-even Cd Nuclei. I. Decay ofAg122

The decay of mass-separated ${}_{}{}^{122}{}_{}{}^{}\mathrm{Ag}$ to levels in ${}_{}{}^{122}{}_{}{}^{}\mathrm{Cd}$ has been studied. The half-life was measured to be 0.48 ± 0.08 sec in disagreement with earlier work. Of six $\gamma$ rays observed, five were placed in a ${}_{}{}^{122}{}_{}{}^{}\mathrm{Cd}$ level scheme with excited states at 569, 1329, 1368, and 1979 keV. The results are compared with the systematics of other even-even Cd nuclei and predictions from a rotation-vibration model.