Breakup of 7Li in the field of 118,120Sn nuclei and its effect on the elastic scattering channel

Abstract The breakup of weakly bounded projectiles has been shown to significantly influence scattering processes, including elastic scattering. In this context, we revisit the angular distributions (ADs) data for elastic scattering of 7 Li from different targets from 118 Sn and 120 Sn targets. The study analyzes 7 Li + 118 Sn ADs over the energy range 18.15–48 MeV, and 7 Li + 120 Sn ADs from 20–44 MeV, utilizing various nuclear interaction models. These include the São Paulo potential, the CDM3Y6 potential (with/without rearrangement term), and cluster folding model. Results indicate that the real component of the folded potentials must be scaled down by 40–65% to achieve an accurate fit to the experimental ADs, underscoring the prominent role of 7 Li breakup effects. Interestingly, the conventional threshold anomaly observed in reactions involving tightly bound nuclei is not present. Further analysis using the continuum discretized coupled channels (CDCC) approach provides excellent agreement with the data, reinforcing these findings.