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

TL;DR

This study investigates how channel coupling influences elastic, inelastic, and neutron transfer reactions in the $^6$Li + $^{159}$Tb system through experimental measurements and coupled channel calculations, providing insights into nuclear interaction mechanisms.

Contribution

It offers a systematic analysis of channel coupling effects on various reaction channels involving $^6$Li and $^{159}$Tb, including extraction of optical potential parameters and spectroscopic factors.

Findings

Pure elastic cross sections were successfully extracted.

Optical model parameters were determined from elastic scattering data.

Coupled channel calculations aligned with experimental inelastic scattering results.

Abstract

Elastic scattering angular distribution for weakly bound nucleus $^{6}$Li on the deformed rare earth $^{159}$Tb 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 $^{159}$Tb. 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. Coupled channel 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 $^{158}$Tb+n configuration from the experimental 1n-pickup data.