Influence of the halo upon angular distributions for elastic scattering and breakup

TL;DR

This paper analyzes the angular distributions in elastic scattering and breakup of halo nuclei, revealing their near-side dominance and the influence of projectile-target interactions and halo extension, using a dynamical eikonal approximation.

Contribution

It introduces a detailed analysis of halo nuclei scattering using a near-side/far-side decomposition within the dynamical eikonal framework, highlighting the similarities in elastic and breakup distributions.

Findings

Both elastic scattering and breakup are near-side dominated.

Distributions are sensitive to projectile-target interactions and halo extension.

Elastic scattering is not significantly affected by flux loss to breakup.

Abstract

The angular distributions for elastic scattering and breakup of halo nuclei are analysed using a near-side/far-side decomposition within the framework of the dynamical eikonal approximation. This analysis is performed for 11Be impinging on Pb at 69 MeV/nucleon. These distributions exhibit very similar features. In particular they are both near-side dominated, as expected from Coulomb-dominated reactions. The general shape of these distributions is sensitive mostly to the projectile-target interactions, but is also affected by the extension of the halo. This suggests the elastic scattering not to be affected by a loss of flux towards the breakup channel.