title: Angular momentum and cross sections for fusion with weakly bound nuclei: breakup, a coherent effect.
abstract: Results for the cross section and average angular momentum for complete fusion at energies around the Coulomb barrier are presented for 7Li with 165Ho. Comparison of the cross sections with a one-dimensional barrier penetration model, using a potential consistent with the measured elastic scattering, showed a reduction above the barrier and an enhancement below it. An increase in the measured average angular momentum, <l>, above the barrier and its consistency with that obtained from the fusion excitation function for weakly bound nuclei, is reported. These results together with a reanalysis of existing data conclusively demonstrate that the effect of breakup on fusion is coherent, like coupling to any nonelastic channel.
authors: Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors: Vandana
authors: V
authors: Tripathi
authors: A
authors: A
authors: Navin
authors: K
authors: K
authors: Mahata
authors: K
authors: K
authors: Ramachandran
authors: A
authors: A
authors: Chatterjee
authors: S
authors: S
authors: Kailas