Small angle cross sections for ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$${(}^{16}$O,${\alpha }_0$) and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$${(}^{16}$O,${\alpha }_1$) reactions have been measured from $E_{\mathrm{c}.\mathrm{m}.\mathrm{}\mathrm{\sim }12}$ to 20 MeV in 50 keV steps and angular distributions are measured at selected energies. A well-isolated resonance with $J^{\pi }$${=10\mathrm{}}^{+}$ and Γ≃100 keV is found at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}\mathrm{\simeq }15.2}$ MeV. The high density of narrow structure over the entire energy range studied indicates no significant influence of dinucleus resonant states of ${}_{}{}^{32}{}_{}{}^{}\mathrm{S}$ in these reactions.

• Received 16 July 1984

DOI:https://doi.org/10.1103/PhysRevC.31.473