Partial fusion of a weakly bound projectile with heavy target at energies above the Coulomb barrier

摘要

Partial-fusion cross-sections for the systems Li-6 + Pb-208, Be-9 + Bi-209 have been determined. The effect of breakup on fusion for weakly bound projectiles Li-6 and Be-9 incident on Pb-208 or Bi-209 targets has been discussed comparing experimental fusion cross-section excitation functions to those evaluated with a semi-classical approach. It is shown that complete fusion of a weakly bound projectile with heavy target is reduced, whereas the breakup process has very little influence on the total-fusion cross-section for some of the studied systems at energies above the Coulomb barrier.