Direct capture astrophysical S factors at low energy
Nuclear Theory
2009-09-25 v4
Abstract
We investigate the energy dependence of the astrophysical S factors for the reactions 7Be(p,gamma)8B, the primary source of high-energy solar neutrinos in the solar pp chain, and 16O(p,gamma)17F, an important reaction in the CNO cycle. Both of these reactions have predicted S factors which rise at low energies; we find the source of this behavior to be a pole in the S factor at a center-of-mass energy E = -E_B, the point where the energy of the emitted photon vanishes. The pole arises from a divergence of the radial integrals.
Keywords
Cite
@article{arxiv.nucl-th/9802028,
title = {Direct capture astrophysical S factors at low energy},
author = {B. K. Jennings and S. Karataglidis and T. D. Shoppa},
journal= {arXiv preprint arXiv:nucl-th/9802028},
year = {2009}
}
Comments
8 pages including 2 figures