The (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$) one-proton transfer reaction is investigated for $\mathrm{fp}$-shell targets ranging from ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ to ${}_{}{}^{70}{}_{}{}^{}\mathrm{Zn}$, at incident energies $E\left({}_{}{}^{16}{}_{}{}^{}\mathrm{O}\right)=42.0,48.0\mathrm{}$, and 56.0 MeV. Angular distributions for the prominent transitions are presented. The results are discussed in a semiclassical model and are analyzed by finite-range distorted-wave Born-approximation (DWBA) calculations. With two sets of optical-model parameters, fixed for the whole region of nuclei, the extracted relative strengths of the transitions are consistent with those known from (${}_{}{}^3{}_{}{}^{}\mathrm{He},d$) reactions. The absolute strengths are found to be sensitive to the specific choice of the parameters used in the DWBA. A reexamination of the data that had been interpreted as indications of two-step processes in the (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$) reaction to final states in ${}_{}{}^{51}{}_{}{}^{}\mathrm{V}$ leads to the conclusion that there is no evidence for such processes in this case at the incident energy employed.

• Received 7 August 1972

DOI:https://doi.org/10.1103/PhysRevC.7.107