Capture and fusion dynamics in heavy-ion collisions

Abstract

The dependence of the difference between the processes of capture and complete fusion is studied as a function of the entrance channel in the framework of the combined dynamical and statistical model. The excitation functions for the 126 Ba compound nucleus formed in the 19 F + 107 Ag and 28 Si + 98 Mo reactions were calculated to compare the E min and E max values of the beam energy window for the fusion cross section. The importance of the competition between quasi-fission and complete fusion in interpreting the experimental data obtained for the 40 Ar + nat Ag reaction is discussed. The increase in the difference between the experimental evaporation residue production and the extracted fusion cross section at increasing 40 Ar beam energy is explained as an increasing effect of the quasi-fission process.