Excitation functions for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$${+}^{12}$C elastic scattering have been calculated in the center-of-mass energy range $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}$=15 to 95 MeV at c.m. angles of 50°, 70°, and 90° using optical-model parameters determined by fitting an angular distribution at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}$=60.8 MeV. Conventional Woods-Saxon parameters for four families of different real well depth and with either a volume or surface absorption predict gross structure at 90° which persists undiminished throughout this energy range.

• Received 10 May 1988

DOI:https://doi.org/10.1103/PhysRevC.38.2958