Decay of As72

The gamma rays following the decay of ${\mathrm{As}}^{72}$ have been studied with scintillation spectrometers both single and in coincidence. Sixteen gamma rays have been resolved and have necessitated the addition of levels at 2.91 and 3.74 Mev to the levels of ${\mathrm{Ge}}^{72}$ known from previous studies of the radiations of ${\mathrm{Ga}}^{72}$. From delayed coincidence measurements gamma rays of 1.75, 2.24, and 3.0 Mev, in addition to annihilation radiation, have been observed to populate the isomeric (${0}^{+}$) state in ${\mathrm{Ge}}^{72}$ at 0.69 Mev.