Role of break-up processes in fusion enhancement of drip-line nuclei at energies below the Coulomb barrier

Details Role of break-up processes in fusion enhancement of drip-line nuclei at energies below the Coulomb barrier Role of break-up processes in fusion enhancement of drip-line nuclei at energies below the Coulomb barrier

1999-08-03

arxiv.org/abs/nucl-th/9908012v1

Phys.Rev.C61:037602,2000

Physics

Nuclear Physics

Nuclear Theory

RevTex, 3 pages, 5 figures

Scientific paper

10.1103/PhysRevC.61.037602

We carry out realistic coupled-channels calculations for $^{11}$Be + $^{208}$Pb reaction in order to discuss the effects of break-up of the projectile nucleus on sub-barrier fusion. We discretize in energy the particle continuum states, which are associated with the break-up process, and construct the coupling form factors to these states on a microscopic basis. The incoming boundary condition is employed in solving coupled-channels equations, which enables us to define the flux for complete fusion inside the Coulomb barrier. It is 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 barrier energies.

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