Cross sections for deeply inelastic collisions, fusion, and elastic scattering of ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ on ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ were measured at 151 MeV. The critical angular momentum $L_{\mathrm{cr}}$ and the grazing one $L_{\mathrm{gr}}$ deduced from the fusion and elastic scattering data were used in an attempt to interpret the fragment kinetic energies in deeply inelastic collisions in terms of a rotating double-nucleus system whose contributing initial angular momentum depends explicitly on the amount of nucleon transfer.

NUCLEAR REACTIONS ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$+${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$, $E=151\mathrm{}$ MeV, measured energy spectra, angular distributions for $4<~Z<~15$, elastic scattering angular distribution, evaporation residue cross section. Gas ionization and Si detectors. Natural target. Deduced optical model parameters, reaction cross section, fragment kinetic energies.

• Received 7 July 1980

DOI:https://doi.org/10.1103/PhysRevC.22.2424