Uncertainties in extracting $S_{17}$ from transfers
Abstract
The transfer reaction is modelled for the recent low experimental energies using the DWBA. Tests of the validity of the ANC method for the extraction of the astrophysical factor are performed. We show that a peripheral assumption is no longer accurate for center of mass energies greater than approximately 15 MeV. In all cases we found that core deformation and/or excitation effects to be small as long as the optical potential for the entrance channel is not strongly surface peaked. Multistep corrections to the DWBA were found to be small. We also emphasize that the lack of knowledge of the optical potentials for the entrance and outgoing channels induces severe uncertainties in the extracted astrophysical factor.
Keywords
Cite
@article{arxiv.nucl-th/9902047,
title = {Uncertainties in extracting $S_{17}$ from transfers},
author = {J. C. Fernandes and R. Crespo and F. M. Nunes and I. J. Thompson},
journal= {arXiv preprint arXiv:nucl-th/9902047},
year = {2009}
}
Comments
17 pages, 8 figures, to be published in Phys Rev C