Abstract

The decay of ${\mathrm{As}}^{74}$ (17.5-day) has been reinvestigated with single and coincidence scintillation spectrometers. The singles spectrum revealed previously unknown gamma rays of 1.19\ifmmode\pm\else\textpm\fi{}0.01, 1.60\ifmmode\pm\else\textpm\fi{}0.04, and 2.22\ifmmode\pm\else\textpm\fi{}0.02 Mev. X-ray---gamma coincidence measurements indicate the 1.19-Mev gamma ray is predominantly associated with the decay to ${\mathrm{Ge}}^{74}$. Evidence is found for 0.6-0.6 Mev gamma-gamma coincidences in ${\mathrm{Ge}}^{74}$. Based on these data, a level scheme for ${\mathrm{Ge}}^{74}$ is presented with excited states at 0.596, 1.19, and 2.22 Mev. No new information concerning the decay to ${\mathrm{Se}}^{74}$ has been gained.

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