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.

RADIOACTIVITY ${}_{}{}^{122}{}_{}{}^{}\mathrm{Ag}$ [from ${}_{}{}^{235}{}_{}{}^{}\mathrm{U}\mathrm{}(n,f)\mathrm{}$]; measured $T_{\frac{1}{2}}$, $E_{\gamma }$, $I_{\gamma }$, $\gamma \gamma$-coin Ge(Li) detectors; ${}_{}{}^{122}{}_{}{}^{}\mathrm{Cd}$ deduced levels, $J$, $\pi$, $log\mathrm{ft}$. Mass-separated ${}_{}{}^{122}{}_{}{}^{}\mathrm{Ag}$ activity.

• Received 12 December 1977

DOI:https://doi.org/10.1103/PhysRevC.17.1163