Angular Distribution of the Protons from theO16(d, p)O17Reaction as a Function of the Bombarding Energy

The angular distribution of the protons from the reaction ${\mathrm{O}}^{16}(d, p){\mathrm{O}}^{17}$ leaving ${\mathrm{O}}^{17}$ in its ground and first excited states has been measured as a function of the deuteron bombarding energy. Deuterons of energy 2.51, 2.26, 2.01, 1.76, 1.60, 1.35, and 1.05 Mev were used to bombard thin ZnO targets. The resulting protons were detected at angles ranging from 5 to 160 degrees with respect to the deuteron beam. Detection was accomplished with CsI(Tl) phosphors on 6291 photomultipliers mounted as a unit in the vacuum housing of the reaction chamber. The characteristic forward stripping maxima are obtained in both reactions plus considerable yield in the backward direction, especially near resonances in the reaction. The effect of a resonance at 1.7 Mev is to flatten the distribution curves so as almost completely to mask their stripping character. Secondary maxima observed in the excited state distributions are interpreted as the result of nuclear interaction of the stripped proton with the residual nucleus. Coulomb effects are also observed as the deuteron energy is lowered. The stripping maxima are shifted to larger angles and the valleys become less pronounced. Absolute differential cross sections for the reactions are also given.