Angular distributions of the ${}_{}{}^{74}{}_{}{}^{}\mathrm{Ge}$(${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$)${}_{}{}^{76}{}_{}{}^{}\mathrm{Ge}$ and ${}_{}{}^{76}{}_{}{}^{}\mathrm{Ge}$(${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$)${}_{}{}^{74}{}_{}{}^{}\mathrm{Ge}$ reactions have been measured at incident energies of 75 and 77.6 MeV, respectively. The time-reversed reaction cross sections leading to the Ge ground states are nearly identical bell shaped curves. Stripping and pickup angular distributions to the Ge $2^{+}$ states show a strong shape difference suggesting interference between direct and two-step transfer. Angular distributions for which ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ is in its first $2^{+}$ state are similar in shape to those with ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ in its ground state. Data are also presented for elastic and inelastic scattering in both entrance and exit channels as well as for single-neutron transfer.

[NUCLEAR REACTIONS ${}_{}{}^{74}{}_{}{}^{}\mathrm{Ge}$(${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$), (${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{17}{}_{}{}^{}\mathrm{O}$), (${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$) $E=75\mathrm{}$ MeV; ${}_{}{}^{76}{}_{}{}^{}\mathrm{Ge}$(${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$), (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$) $E=77.6\mathrm{}$ MeV; measured $\sigma \left(\theta \right)$.]

• Received 9 March 1977

DOI:https://doi.org/10.1103/PhysRevC.16.177