| Popis: |
A source of ${\mathrm{Cu}}^{62}$ was prepared by means of the ($p, \ensuremath{\gamma}$) 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\ifmmode\pm\else\textpm\fi{}0.01, 1.13\ifmmode\pm\else\textpm\fi{}0.02, and 1.17\ifmmode\pm\else\textpm\fi{}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\ifmmode\pm\else\textpm\fi{}0.2 min. Branching ratios and $log\mathrm{ft}$ values have been calculated and are listed in tabular form. |
