The ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$($n$,${\gamma }_0$)${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ reaction has been studied over a neutron energy range of 5.6 MeV to 13 MeV. Data include a 90° excitation function measured in 200 keV steps, and seven angular distributions. The angular distribution data show good agreement with the results of a phenomenological direct semidirect model calculation. No non-$E1\mathrm{}$ radiation is required to account for these data. The cross section as a function of energy is similar to the ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$($p$,${\gamma }_0$)${}_{}{}^{15}{}_{}{}^{}\mathrm{O}$ reaction and different from the ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$($p$,${\gamma }_0$)${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ reaction. These differences can be understood in terms of the different isospin states allowed in each reaction.

NUCLEAR REACTIONS ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$($n$,${\gamma }_0$)${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$, measured $\sigma (E,\theta )$ from $E_n=5.6-13.0\mathrm{}$ MeV, DSD model calculations, results compared to ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$($p$,${\gamma }_0$)${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ and ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$($p$,${\gamma }_0$)${}_{}{}^{15}{}_{}{}^{}0$.

• Received 8 June 1981

DOI:https://doi.org/10.1103/PhysRevC.25.89