Energy Dependence of the Fusion Cross Section for Ca+Ca and the Dynamical Inhibition of Fusion at Low Impact Parameters

Abstract
The model of heavy-ion collisions based on the excitation of damped surface modes has been used to study the fusion reactions of Ca+Ca. The calculated fusion cross section is in good agreement with recent data, and gives support to the conclusion that the decrease in the cross section below the geometrical limit for higher energies is due to dynamical difficulties in forming a compound nucleus at intermediate or small impact parameters.