Coulomb corrected eikonal description of the breakup of halo nuclei

TL;DR

This paper introduces a Coulomb correction to the eikonal model for breakup reactions of halo nuclei, improving accuracy by addressing divergence issues caused by Coulomb interactions.

Contribution

It proposes a Coulomb correction method replacing the first-order eikonal Coulomb phase with perturbation theory, aligning with the dynamical eikonal approximation.

Findings

Excellent agreement with dynamical eikonal approximation for 11Be breakup.

Provides a computationally efficient alternative to complex reaction models.

Effective at intermediate and high energies for three-body projectile breakup.

Abstract

The eikonal description of breakup reactions diverges because of the Coulomb interaction between the projectile and the target. This divergence is due to the adiabatic, or sudden, approximation usually made, which is incompatible with the infinite range of the Coulomb interaction. A correction for this divergence is analysed by comparison with the Dynamical Eikonal Approximation, which is derived without the adiabatic approximation. The correction consists in replacing the first-order term of the eikonal Coulomb phase by the first-order of the perturbation theory. This allows taking into account both nuclear and Coulomb interactions on the same footing within the computationally efficient eikonal model. Excellent results are found for the dissociation of 11Be on lead at 69 MeV/nucleon. This Coulomb Corrected Eikonal approximation provides a competitive alternative to more elaborate reaction models for investigating breakup of three-body projectiles at intermediate and high energies.