Radioactive Decay ofSn111

Sources of 35-min ${\mathrm{Sn}}^{111}$ were made by the reactions ${\mathrm{Sn}}^{112}(\gamma ,n){\mathrm{Sn}}^{111}$, ${\mathrm{Sn}}^{112}\mathrm{}(n,2n)\mathrm{}{\mathrm{Sn}}^{111}$ and ${\mathrm{Cd}}^{110}({\mathrm{He}}^3,2n){\mathrm{Sn}}^{111}$. The ratio $\frac{\mathrm{ec}}{{\beta }^{+}}$ was determined to be 2.7±0.2. The following gamma rays were observed by scintillation techniques: 750, 970, 1140, 1540, 1590, 1890, 2110, and 2320 keV. The following levels in ${\mathrm{In}}^{111}$ are proposed, based on coincidence studies and transition probabilities: 970, 1140, 1540, 1890, 2110, and 2320 keV.