Speaker
Description
In this study, we revisit the quasi-elastic scattering angular distributions for the 10,11B + 232Th systems at near-barrier energies, initially measured and analyzed by Dubey et al. (PRC 94, 064610 (2016)). In the previous analysis, the quasi-elastic cross-section included contributions from inelastic scattering to the low-lying excited states (2+ at 49.37 keV and 4+ at 162.12 keV) of the 232Th target due to experimental limitations that precluded their separation from the elastic peak. To disentangle these contributions and provide a more refined understanding of the experimental data, we performed a comprehensive reanalysis using the Coupled-Channel (CC) method.
In our approach, the entrance channel is modeled in a three-state framework that explicitly includes the ground state and the two low-lying excited states of 232Th. The nuclear potentials for the real and imaginary parts were constructed using a double-folding model with microscopic nucleon-nucleon interactions. The influence of inelastic scattering channels on the 2+ and 4+ states of 232Th was investigated to determine their contributions to the quasi-elastic scattering cross-section.
Our results demonstrate the significant role of coupling to these inelastic channels in shaping the angular distributions of the quasi-elastic scattering. The improved theoretical framework provides insights into the reaction dynamics and enhances the interpretative accuracy of experimental data. These findings contribute to a deeper understanding of near-barrier nuclear reactions involving deformed heavy nuclei. The implications of our results and their consistency with the experimental data will be discussed.
