The disintegration of ${\mathrm{As}}^{71}$, formed by the deuteron bombardment of separated ${\mathrm{Ge}}^{70}$, has been investigated with the help of magnetic spectrometers, scintillation spectrometers, and coincidence counting. The half-life was found to be 62±3 hours. Two gamma rays are emitted whose energies are 175.0±0.3 kev and 23 kev. Positrons are emitted which have an end-point energy of 815±10 kev. The state at 175 kev has a half-life of 0.07±${10}^{-6\mathrm{}}$ sec. A tentative decay scheme is proposed.

• Received 5 November 1954

DOI:https://doi.org/10.1103/PhysRev.97.1033