Angular distributions of the (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$) reaction on ${}_{}{}^{72,74,76}{}_{}{}^{}\mathrm{Ge}$ targets were measured using a 56 MeV ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ beam in 2° steps between 13° and 17° laboratory angles. The experiments were performed using three solid state detector telescopes. The observed difference between the shapes of the angular distributions of the ground states and the excited states indicates that an important role is played by multistep processes, involving vibrational excitation of the target and residual nuclei. It was found that the exact-finite-range coupled-channel-Born-approximation calculations were able to reproduce qualitatively the observed variation of the angular distributions.

NUCLEAR REACTIONS ${}_{}{}^{72,74,76}{}_{}{}^{}\mathrm{Ge}$ (${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$), $E=56\mathrm{}$ MeV; measured $\sigma \left(\theta \right)$ and calculated $\sigma \left(\theta \right)$ with EFR-CCBA and DWBA.

• Received 29 September 1975

DOI:https://doi.org/10.1103/PhysRevC.13.1200