Systematic investigation of channel-coupling effects on elastic, inelastic, and neutron-transfer channels in 6Li+159Tb

Elastic-scattering angular distribution for the weakly bound nucleus 6Li on the deformed rare-earth 159Tb target nucleus has been measured at energies around the Coulomb barrier. The elastic-scattering cross sections for this reaction consist of inelastic contributions from low-lying excited states of 159Tb. The pure elastic cross sections have been extracted from the admixture of elastic and inelastic data. The optical model potential parameters for the system have been obtained from the extracted pure elastic-scattering cross sections. Coupledchannel calculations have been performed with this set of potential parameters, to compare the theoretical and experimental inelastic-scattering cross sections. The work has been extended to obtain the spectroscopic factor for 158Tb +n configuration from the experimental 1n-pickup data.

Automated summary

This study measured the elastic-scattering angular distribution of the weakly bound nucleus 6Li on the deformed rare-earth 159Tb target nucleus at energies near the Coulomb barrier. The elastic-scattering cross sections were found to consist primarily of inelastic contributions from low-lying excited states of 159Tb. Pure elastic cross sections were extracted from the admixture of elastic and inelastic data. The optical model potential parameters for the system were obtained from the extracted pure elastic-scattering cross sections, and coupled-channel calculations were used to compare the theoretical and experimental inelastic-scattering cross sections. Additionally, the spectroscopic factor for the 158Tb+n configuration was obtained from experimental 1n-pickup data.