Fusion reaction studies for the Be 9 + y 89 system at above-barrier energies

Abstract

Complete fusion (CF) cross section measurement for the weakly bound Be9 projectile interacting with the intermediate mass target Y89 has been extended to energies greater than the fusion barrier, by implementing off-line characteristic γ-ray detection techniques. The available experimental data for the Be9+Y89 reaction system were compared with the theoretical predictions, using the platypus code that is based on a classical dynamical model. By introducing the breakup probability that deduced in the literature from the fitting of the experimental data, the model managed to reproduce the CF cross sections of Be9 beam with targets of different atomic mass. Through the study, it is revealed that the extended CF excitation function for the Be9+Y89 system is consistent with the systematical behavior that the prompt-breakup probability at above-barrier energies is roughly independent of the target in the reactions induced by the same weakly bound projectiles. .