The yields of several nuclides produced in the ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ reaction have been measured over the range $E_{\mathrm{c}.\mathrm{m}}=16\mathrm{}-34$ MeV. The excitation function for the production of ${}_{}{}^{22}{}_{}{}^{}\mathrm{Ne}$ displays a regular sequence of narrow fine-structure resonances similar to those previously observed in the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ reaction. This is the first time that such structure has been observed for systems of non-$\alpha$-particle nuclei. Intermediate-width resonances are observed in the yield of ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ at $E_{\mathrm{c}.\mathrm{m}}=19.5,23.5,27.5, \mathrm{and} 31$ MeV. Correlated structure appears in the inelastic scattering cross section to the $3^{-}$ state of ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$ at all these energies, except possibly $E_{\mathrm{c}.\mathrm{m}}=19.5\mathrm{}$ MeV. The resemblance of the 23.5-MeV structure to anomalies previously observed in the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ reactions is noted, and some properties of the compound system are deduced.

NUCLEAR REACTIONS ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}({}_{}{}^{16}{}_{}{}^{}\mathrm{O},x)$; $E_{\mathrm{c}.\mathrm{m}}=16\mathrm{}-34$ MeV; $\sigma$ total; correlated fine-structure and intermediate resonances discussed; properties of ${}_{}{}^{30}{}_{}{}^{}\mathrm{Si}$ deduced.

• Received 10 November 1980

DOI:https://doi.org/10.1103/PhysRevC.23.1056