Differential cross sections of deuteron elastic scattering from ${}_{}{}^{17}{}_{}{}^{}\mathrm{O}$ and of the ${}_{}{}^{17}{}_{}{}^{}\mathrm{O}\mathrm{}(d,p)\mathrm{}{}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ reaction have been measured at a deuteron bombarding energy of 18 MeV for transitions to 12 states in ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ up to an excitation energy of 6.341 MeV. Absolute spectroscopic factors were extracted with the aid of distorted-wave-Born-approximation calculations. The results are compared with theoretical calculations and show a distinct preference for a weak-coupling model. Diagonal matrix elements of the effective neutron-neutron interaction were deduced from the data for the $\left(d_{\frac{5}{2}}\right)_{}^2{}_{0^{+},2^{+},4^{+}}{}^{}$ and ${\left(d_{\frac{5}{2}}{s}_{\frac{1}{2}}\right)}_{2^{+},3^{+}}$ configurations. A theoretical estimate of the errors involved is in qualitative agreement with the deviations observed between experiment and theory.

NUCLEAR REACTIONS ${}_{}{}^{17}{}_{}{}^{}\mathrm{O}(d,d)$, ($d,p$), $E=18.0\mathrm{}$ MeV; measured $\sigma \left(\theta \right)$, deduced optical-model parameters; measured $\sigma (E_p,\theta )$ ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ levels deduced $l$, $S$, effective interactions. Enriched target.

• Received 7 August 1975

DOI:https://doi.org/10.1103/PhysRevC.13.55