Probing of incomplete fusion dynamics and its correlation with various systematic

Abstract

The study of complete and incomplete fusion dynamics in Ne20+59Co system at projectile energies ≈62–150 MeV using recoil-catcher activation technique followed by offline gamma-ray spectroscopy has been done. The excitation functions for the evaporation residues produced in the reaction channels 63Zn(3αp3n), 62Zn(3αp4n) and 60Cu(4α3n) have been measured. The excitation functions for these evaporation residues have been compared with theoretical predictions based on code PACE-2. The observed enhancements in the measured cross-sections over their theoretical predictions for the α-emitting channels indicate the presence of incomplete fusion. The incomplete fusion fraction (FICF) has also been deduced and compared with those obtained for few earlier measurements. It has been observed that the incomplete fusion contributes significantly along with complete fusion even at lower projectile energies and it increases with increasing the projectile energies. Mass-asymmetry systematic is found to be projectile structure dependent rather than a simple linear growth with increasing the mass-asymmetry between interacting partners. Further, the deformation of the target is also found to affect the incomplete fusion dynamics. The present results show that the incomplete fusion dynamics does not depend completely on a single entrance channel parameter, but it also depends on multi entrance channel parameters namely; entrance channel mass-asymmetry, α-Q-value of the projectile, Coulomb factor (ZPZT) and deformation of the target or deformation parameter (β2). All these parameters are found to play an important role in the dynamics of incomplete fusion.