One-neutron stripping processes to excited states of Y*90 in the Y89(Li6,Li5)Y*90 reaction

The measurement of one-neutron stripping cross sections for the Y-89(Li-6, Li-5)Y-90* reaction at 22 MeV and 34 MeV is reported, using both in-beam and off-beam gamma-ray spectroscopy methods. Characteristic gamma lines of Y-90 are clearly identified by both the gamma-gamma and proton-gamma coincidence methods. The obtained cross section of one-neutron stripping at 34 MeV is found to be much smaller than that at 22 MeV. The one-neutron stripping cross sections measured for this system have the same order of magnitude as the one measured for the same reaction for the Li-6 + Zr-96 system at energies around the Coulomb barrier. Parameter-free coupled reaction channel calculations agree quite well with the experimental data. Theoretical study of the effect of the one-neutron transfer on the elastic total fusion cross section is performed.