Differential cross section measurements are given for the isospin related reaction channels ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}(p,t){}_{}{}^{14}{}_{}{}^{}\mathrm{O}(\mathrm{g}.\mathrm{s}.\mathrm{})$ and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}(p,{}_{}{}^3{}_{}{}^{}\mathrm{He}){}_{}{}^{14}{}_{}{}^{}\mathrm{N}\left(2.31\mathrm{} \mathrm{MeV}\right)$ for several proton energies near 29 MeV. The isospin mixture of the exit channel changes significantly with small changes in bombarding energy. Distorted-wave Born-approximation calculations reproduce the changes reasonably well. Calculations show, however, that compound nuclear contributions might be large.

[NUCLEAR REACTIONS ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}(p,t)$, $(p,{}_{}{}^3{}_{}{}^{}\mathrm{He})E=27-30.7\mathrm{}$ MeV; measured $\sigma (E;\theta )$; DWBA analysis; Hauser-Feshbach calculations.]

• Received 15 September 1977

DOI:https://doi.org/10.1103/PhysRevC.17.493