One-neutron stripping from ^8 Li projectiles to ^9 Be target nuclei

The ^8 Li + ^9 Be quasi-elastic angular distribution and the ^9 Be( ^8 Li ,^7 Li) X inclusive reaction have been measured at E _Lab=23.8 MeV bombarding energy using the RIBRAS facility. In addition to the ^8 Li scattering peak, a large yield of ^7 Li particles has been observed in the identification spectra, presenting a wide energy distribution centered around and below the energy of the ^8 Li quasi-elastic peak. The ^7 Li angular and energy distributions have been obtained and analysed assuming that these particles stem from two different mechanisms: ( i ) the elastic breakup (EBU), in which the projectile dissociates into ^7 Li+ n and the ^9 Be target remains in its ground state and ( ii ) the nonelastic breakup (NEB) which accounts for absorptive processes between the neutron and the target, including the neutron transfer. The ^7 Li angular and energy distributions have been analyzed by the Ichimura, Austern and Vincent (IAV) model for NEB, and the Continuum-Discretized Coupled-Channels (CDCC) method for the EBU. The theoretical results are in good agreement with the experimental data.