Decay of mass-separatedZn78

The decay of neutron-rich ${}_{}{}^{78}{}_{}{}^{}\mathrm{Zn}$ produced by the thermal neutron fission of ${}_{}{}^{235}{}_{}{}^{}\mathrm{U}$ was studied with mass-separated sources. The decay scheme was deduced from $\gamma$ singles and coincidence measurements. The ${}_{}{}^{78}{}_{}{}^{}\mathrm{Zn}$ half-life was determined to be 1.47±0.15 s and 57 $\gamma$ transitions were placed in a level scheme for ${}_{}{}^{78}{}_{}{}^{}\mathrm{Ga}$ involving 19 excited states. The systematics of odd-odd Ga nuclides is discussed.