Li11 breakup on Pb208 at energies around the coulomb barrier

Abstract

The inclusive breakup for the Li11+Pb208 reaction at energies around the Coulomb barrier has been measured for the first time. A sizable yield of Li9 following the Li11 dissociation has been observed, even at energies well below the Coulomb barrier. Using the first-order semiclassical perturbation theory of Coulomb excitation it is shown that the breakup probability data measured at small angles can be used to extract effective breakup energy as well as the slope of B(E1) distribution close to the threshold. Four-body continuum-discretized coupled-channels calculations, including both nuclear and Coulomb couplings between the target and projectile to all orders, reproduce the measured inclusive breakup cross sections and support the presence of a dipole resonance in the Li11 continuum at low excitation energy. © 2013 American Physical Society.