Role of breakup processes in fusion enhancement of drip-line nuclei at energies below the Coulomb barrier - art. no. 037602

We carry out realistic coupled-channel calculations for the Be-11+Pb-208 re action in order to discuss the effects of breakup of the projectile nucleus on subbarrier fusion. We discretize in energy the particle continuum state s, which are associated with the breakup process, and construct the couplin g form factors to these states on a microscopic basis. The incoming boundar y condition is employed in solving coupled-channel equations, which enables us to define the flux for complete fusion inside the Coulomb barrier. It i s shown that complete fusion cross sections are significantly enhanced due to the couplings to the continuum states compared with the no-coupling case at energies below the Coulomb barrier, while they are hindered at above ba rrier energies.