The Thick Target Yield of the Reaction ${\mathrm{C}}^{12}(p,\gamma ){\mathrm{N}}^{13}\left({\beta }^{+}\right){\mathrm{C}}^{13}$

The yield of ${\mathrm{N}}^{13}$ from a thick carbon target bombarded with protons of energy up to 2.5 Mev has been studied by detecting annihilation quanta with a scintillation crystal. Resonances at 0.45 and 1.70 Mev are confirmed, and independent values are obtained for their relative and absolute intensities.