Theoretical study of the elastic breakup of weakly bound nuclei at near barrier energies

TL;DR

This study uses CDCC calculations to analyze how Coulomb and nuclear forces influence the breakup of weakly bound $^{7}$Li nuclei near the Coulomb barrier, comparing results with $^{6}$Li to understand underlying mechanisms.

Contribution

It provides a detailed theoretical analysis of the elastic breakup of $^{7}$Li, including Coulomb-nuclear interference and scaling laws, extending previous work on $^{6}$Li.

Findings

Coulomb and nuclear couplings significantly affect $^{7}$Li breakup.

Scaling laws relate cross sections to target charge and mass.

Differences and similarities between $^{6}$Li and $^{7}$Li breakup behaviors are identified.

Abstract

We have performed CDCC calculations for collisions of $^{7}$Li projectiles on $^{59}$Co, $^{144}$Sm and $^{208}$Pb targets at near-barrier energies, to assess the importance of the Coulomb and the nuclear couplings in the breakup of $^{7}$Li, as well as the Coulomb-nuclear interference. We have also investigated scaling laws, expressing the dependence of the cross sections on the charge and the mass of the target. This work is complementary to the one previously reported by us on the breakup of $^{6}$Li. Here we explore the similarities and differences between the results for the two Lithium isotopes. The relevance of the Coulomb dipole strength at low energy for the two-cluster projectile is investigated in details.