Ground-state ($p, t$) cross sections measured for five $\mathrm{sd}$-shell nuclei are, with one exception, explained well by the shell-model calculations of Chung and Wildenthal. The deviation in the case of the ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}(p, t){}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ reaction is quantitatively explained by taking account of the core-excited components in ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$.

NUCLEAR REACTIONS ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{22}{}_{}{}^{}\mathrm{Ne}$, ${}_{}{}^{26}{}_{}{}^{}\mathrm{Mg}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{Si}$, ${}_{}{}^{34}{}_{}{}^{}\mathrm{S}(p, t)$ to ground states, $E_p=23\mathrm{}$ MeV, measured $\sigma \left(\theta \right)$, enriched targets. DWBA analysis; comparison with shell model.

• Received 14 April 1980

DOI:https://doi.org/10.1103/PhysRevC.22.945