A ${10}^{+}$ resonance with a width of about 700 keV (c.m.) for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ has been observed in the reaction ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$(${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^8{}_{}{}^{}\mathrm{Be}_{\mathrm{g}.\mathrm{s}.\mathrm{}}^{}{}_{}{}^{}$)${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}=18.8\mathrm{}$ MeV leading to the ground state and several excited states in ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$. The spin value of $I=10\mathrm{}$ is four units of angular momentum below the grazing value of $l=14\mathrm{}$ obtained from elastic scattering, and is still two units below the strong-absorption $l$ value obtained from ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ total fusion cross sections.

• Received 2 October 1978

DOI:https://doi.org/10.1103/PhysRevLett.42.432