Decay of 9.3-hZn62toCu62

The excited levels of ${\mathrm{Cu}}^{62}$ have been investigated from the decay of ${\mathrm{Zn}}^{62}$ with Ge(Li), Si(Li), and standard scintillation counters. $\gamma$ rays of energy 0.042, 0.245, 0.260, 0.395, 0.505, 0.547, 0.595, and 0.682 MeV have been observed to decay with a half-life of 9.3 h. With the help of $\gamma -\gamma$ coincidence study, a consistent scheme of levels at 0.042, 0.287, 0.547, 0.637, and 0.682 MeV in ${\mathrm{Cu}}^{62}$ has been obtained. The spin and parity assignments of some of the excited levels of ${\mathrm{Cu}}^{62}$ are discussed. The half-life of the 42-keV level is measured by delayed coincidence to be (2.5±0.1) × ${10}^{-9\mathrm{}}$ sec.