Elastic scattering ofCa40byCa40

Angular distributions for the elastic scattering of ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ by ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}=64.8, 71.8, 88, 93, 112.5, \mathrm{and} 120$ MeV and excitation functions at 60°, 70°, and 90° (c.m.) over the c.m. energy range 55-120 MeV have been measured. Strong-absorption-model and optical-model analyses are presented. The predictions of several theoretical interaction potentials are compared with the data. The absence of structure in the excitation functions is studied and explained by the large mass and charge of the colliding nuclei.