Radiative Proton Capture inO18

The excitation function for radiative proton capture in ${\mathrm{O}}^{18}$ has been observed at zero degrees with a 3-in.×3-in. NaI crystal. Bias adjustments were selected in order to establish the resonances for proton capture which lead to the emission of high-energy radiation. About twenty resonances were found for protons ranging in energy from 1.6 to 3.0 Mev, and there were indications for a number of weaker additional resonances. A slow-coincidence technique was used to investigate the gamma decay schemes for ${\mathrm{F}}^{19}$ for six levels of excitation from 8.56 to 10.10 Mev. Quantitative conclusions are drawn regarding the decay of these levels to the ground "triplet" of ${\mathrm{F}}^{19}$.