Large back-angle quasielastic scattering for ${}^7$Li+${}^{159}$Tb

Abstract

Quasielastic scattering excitation function at large backward angle has been measured for the weakly bound system, ${}^7$Li+${}^{159}$Tb at energies around the Coulomb barrier. The corresponding quasielastic barrier distribution has been derived from the excitation function, both including and excluding the $\alpha$-particles produced in the reaction. The centroid of the barrier distribution obtained after inclusion of $\alpha$-particles was found to be shifted higher in energy, compared to the distribution excluding the $\alpha$-particles. The quasielastic data, excluding the $\alpha$-particles, have been analyzed in the framework of continuum discretized coupled channel calculations. The quasielastic barrier distribution for ${}^7$Li+${}^{159}$Tb, has also been compared with the fusion barrier distribution for the system.

References in corpus (5)

• Influence of projectile <alpha>- breakup threshold on complete fusion
• Fusion of ${}^6$Li with ${}^{159}$Tb} at near barrier energies
• Investigation of complete and incomplete fusion in ${}^7$Li+${}^{124}$Sn reaction around Coulomb barrier energies
• What does really mean the "barrier distribution function" derived from backward angle quasi-elastic scattering
• Probing transfer to unbound states of the ejectile with weakly bound 7Li on 93Nb