Study of the Influence of Projectile Breakup on the Fusion Cross Section of^6,7Li +¹²C,⁵⁹Co

Near-barrier Fusion Induced by Stable Weakly Bound and Exotic Halo Light Nuclei

“…A similar comparison has been provided for the elastic scattering of both 7 Li+ 65 Cu and 6 Li+ 65 Cu reactions [13]. The effect of breakup on elastic scattering, stronger for 6 Li as expected, is illustrated by the difference between the one-channel calculations (comparable to the OM calculations [11]) and the full CDCC results.…”

“…Excitation functions for sub-and near-barrier total (complete + incomplete) fusion cross sections measured for the 6,7 Li+ 59 Co reactions [6] were compared to Continuum-Discretized Coupled-Channels (CDCC) calculations [9] indicating only a small enhancement of total fusion for the more weakly bound 6 Li below the Coulomb barrier, with similar cross sections for both reactions at and above the barrier [10]. This result is consistent with the rather low breakup cross sections measured for the 6 Li+ 59 Co reaction even at incident energies larger than the Coulomb barrier [11].…”

“…Results of the comparison of the CDCC calculations for the elastic scattering with data of Ref. [7,11] are shown in Fig. 1 for 7 Li+ 59 Co (left panel) and 6 Li+ 59 Co (right panel), respectively.…”

“…In the fusion calculations the imaginary parts of the off-diagonal couplings were neglected, while the diagonal couplings included imaginary parts [10]. Otherwise full continuum couplings have been taken into account so as to reproduce the elastic scattering data [7,11]. We have used short-range imaginary fusion potentials for each fragment separately.…”

“…It is interesting to note that the initial optical-model analysis (OM) adopted by Souza and collaborators [11] was found to be ambiguous for the two lowest energies when using a parameter-free nonlocal potential. The agreement between the full calculations and data is very good.…”