The Decay ofZn69

The 52-minute ground state of ${\mathrm{Zn}}^{69}$ has been found to decay with a simple beta-spectrum of end point 0.897±0.005 Mev. The 13.8-hour isomer of ${\mathrm{Zn}}^{69}$ decays to the ground state by emission of a gamma-ray of energy 0.436±0.004 Mev. The conversion coefficient of this gamma-ray is 0.06 indicating a $M4\mathrm{}$ transition.