Analysis of Coulomb breakup experiments of 8B with a dynamical eikonal approximation
Abstract
Various measurements of the Coulomb breakup of 8B are analyzed within the dynamical eikonal approximation using a single description of 8B. We obtain a good agreement with experiment for different observables measured between 40 and 80 MeV per nucleon. A simple 7Be-p potential model description of 8B seems sufficient to describe all observables. In particular, the asymmetry in parallel-momentum distributions due to E1-E2 interferences is well reproduced without any scaling. The projectile-target nuclear interactions seem negligible if data are selected at forward angles. On the contrary, like in previous analyzes we observe a significant influence of higher-order effects. The accuracy of astrophysical S factors for the 7Be(p,gamma)8B reaction at stellar energies extracted from breakup measurements therefore seems difficult to evaluate.
Cite
@article{arxiv.0708.0357,
title = {Analysis of Coulomb breakup experiments of 8B with a dynamical eikonal approximation},
author = {G. Goldstein and P. Capel and D. Baye},
journal= {arXiv preprint arXiv:0708.0357},
year = {2009}
}
Comments
24 pages, 8 figures. Accepted for publication in Phys. Rev. C