The reaction ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$(${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$, ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$)${}_{}{}^{17}{}_{}{}^{}\mathrm{O}$ has been studied at a bombarding energy of 79 MeV. The angular distribution for the transition to the $2s_{\frac{1}{2}}$ state in ${}_{}{}^{17}{}_{}{}^{}\mathrm{O}$ showed an anomaly similar to that already reported in studies of ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$(${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$, ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$)${}_{}{}^{13}{}_{}{}^{}\mathrm{C}$ and ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$(${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$, ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$)${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$.

• Received 4 November 1975

DOI:https://doi.org/10.1103/PhysRevLett.36.390