We analyze fusion cross sections induced by the ${}^6\mathrm{He}$ halo projectile in the framework of the double-folding São Paulo potential, which has already been shown to be a reliable potential for the analysis of fusion cross sections induced by stable weakly bound nuclei. The results show that the fusion cross sections of ${}^6\mathrm{He}+{}^{209}\mathrm{Bi}$, ${}^{238}\mathrm{U}$, ${}^{64}\mathrm{Zn}$ are suppressed at energies above the barrier when compared with coupled-channels calculations that do not take into account the projectile breakup, whereas they are in agreement with the calculations at subbarrier energies. The results for the ${}^6\mathrm{He}+{}^{209}\mathrm{Bi}$ system are contradictory to those reported previously.

• Received 10 November 2006

DOI:https://doi.org/10.1103/PhysRevC.75.037601