The $\gamma$ decay of the 13.42-MeV state of ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$, studied via the reaction ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}(p,\gamma ){}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ using Ge(Li) detectors, is found to be 100% to ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ (g.s.) with $\frac{{\Gamma }_p{\Gamma }_{{\gamma }_0}}{\Gamma }=1.70\mathrm{}\pm 0.5$ eV, ${\Gamma }_{{\gamma }_0}=3.0\mathrm{}\pm 0.9$ eV, and a $\frac{M2}{E1\mathrm{}}$ mixing ratio of 0.00 ± 0.04.

NUCLEAR REACTIONS ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}(p,\gamma )$, $E_p=2.5\mathrm{}-3.7$ MeV, measured $\sigma (E,\theta )$, deduced branching ratios, $J$, ${\Gamma }_{\gamma }$, $\frac{M2}{E1\mathrm{}}$ mixing ratio of the 13.42-MeV state of ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$; enriched target.

• Received 24 November 1975

DOI:https://doi.org/10.1103/PhysRevC.13.883