Fusion reactions in the 9Be + 197Au system above the Coulomb barrier.

The cross sections of complete fusion and incomplete fusion for the 9Be+197Au system, at energies not too much above the Coulomb barrier, were measured for the first time. The online activation followed by an offline γ-ray spectroscopy method was used for the derivation of the cross sections. A slightly higher value of the incomplete fusion to total fusion ratio has been observed, compared to other systems reported in the literature with a 9Be beam. The experimental data were compared with coupled channel calculations without taking into account the coupling of the breakup channel, and experimental data of other reaction systems with weakly bound projectiles. A complete fusion suppression of about 40% was found for the 9Be+197Au system, at energies above the barrier, whereas the total fusion cross sections are in agreement with the calculations. [ABSTRACT FROM AUTHOR]