Decay ofCu62

A source of ${\mathrm{Cu}}^{62}$ was prepared by means of the ($p, \gamma$) reaction on an enriched ${\mathrm{Ni}}^{61}$ target. The gamma rays following positron emission were detected with a scintillation spectrometer, and the following energies were measured: 0.88±0.01, 1.13±0.02, and 1.17±0.01 Mev. The relative intensities with respect to the positrons are 0.3, 0.1, and 0.5% with uncertainties of a factor of two either way. Coincidence techniques and half-life measurements were used to identify the gamma rays with the decay of ${\mathrm{Cu}}^{62}$. The half-life for positron emission was measured to be 9.9±0.2 min. Branching ratios and $log\mathrm{ft}$ values have been calculated and are listed in tabular form.