Excitation Curves and Angular Distributions forN14(d, n)O15

Abstract

Excitation curves for the highest energy neutron group in the reaction ${\mathrm{N}}^{14}(d, n){\mathrm{O}}^{15}$ have been measured at ${\ensuremath{\theta}}_{\mathrm{lab}}=0\ifmmode^\circ\else\textdegree\fi{}, 30\ifmmode^\circ\else\textdegree\fi{}, 90\ifmmode^\circ\else\textdegree\fi{}, \mathrm{and} 164\ifmmode^\circ\else\textdegree\fi{}$ for deuteron bombarding energies between 0.66 and 5.62 Mev. A pulse shape discrimination detector was used to eliminate the pulses due to $\ensuremath{\gamma}$ rays from the neutron spectra. There is considerable resonance structure in the excitation curves, with the anomalies appearing at different energies for the different angles. The angular distribution of this neutron group has also been measured at bombarding energies of 0.91, 1.17, 1.51, 1.88, 2.58, 3.13, 3.56, 4.36, 4.80, and 5.27 Mev. The shape of the angular distribution changes rapidly with energy at low bombarding energy, but above 3.5 Mev the shape becomes more stable. The maximum cross section at any angle was 5.5 millibarns per steradian.