Exclusive breakup of 6Li by 208Pb at Coulomb barrier energies

Differential and total cross sections for the exclusive breakup of a 6Li projectile into a+d and a+p fragments from a 208Pb target were measured at several energies around the Coulomb barrier. The a+d exclusive cross sections are well reproduced by full continuum discretized coupled channel calculations with excitation up to 11.5 MeV of the a+d (6Li*) system. The total exclusive cross sections are much smaller than the inclusive ones for the production of a particles. This large difference gives very clear experimental evidence for the stripping breakup mechanism. Such a process, relevant in the reaction dynamics even at the Coulomb barrier with loosely bound projectiles such as 6Li, needs to be carefully considered and described theoretically.