Neutron Scattering Cross Sections from ¹⁴N and ⁹Be at 11, 14, and 17 MeV

Neutron scattering cross sections were measured for ¹⁴N and ⁹Be at incident neutron energies of 11, 14, and 17 MeV using time-of-flight methods. Angular distributions for ¹⁴N and ⁹Be elastic scattering and ⁹Be inelastic scattering to the 2.429-MeV excited state were obtained between 20 and 160 deg in 5-deg increments. The data were corrected for finite geometry effects using a Monte Carlo simulation code. Legendre polynomial coefficients deduced by fitting the experimental data are tabulated. The results of a spherical optical model analysis for the ¹⁴N data are reported. Coulomb correction terms are obtained from a comparison of neutron and proton elastic scattering data for ¹⁴N.