Elastic scattering cross sections for ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$ + ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$ have been measured at 70°, 80°, and 90° (c.m.) in the energy range between 6 and 35 MeV (c.m.). Strongly pronounced, rather regular, gross structure is observed which, at 90°, peaks at 15.5, 19.5, 24, and 28 MeV. The angular distributions suggest a dominance of $l=12, 14, 16, \mathrm{and} 18$, respectively, at these energies. Intermediate structure is observed in the single and mutual $3^{-}$, 6.73-MeV inelastic channels above 20 MeV (c.m.).

• Received 14 July 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.1154