Elastic scattering, inelastic excitation, and neutron transfer for Li7+Sn120 at energies around the Coulomb barrier
AbstractExperimental angular distributions for the Li7+Sn120 elastic and inelastic (projectile and target excitations) scattering, and for the neutron stripping reaction, have been obtained at ELAB=20, 22, 24, and 26 MeV, covering an energy range around the Coulomb barrier (VB(LAB)≈21.4 MeV). Coupled channel and coupled reaction channel calculations were performed and both describe satisfactorily the experimental data sets. The 12− state Li7 inelastic excitation (using a rotational model), as well as the projectile coupling to the continuum (α plus a tritium particle) play a fundamental role on the proper description of elastic, inelastic, and transfer channels. Couplings to the one-neutron stripping channel do not significantly affect the theoretical elastic scattering angular distributions. The spectroscopic amplitudes of the transfer channel were obtained through a shell model calculation. The theoretical angular distributions for the one-neutron stripping reaction agreed with the experimental data.