On the extrapolation of the astrophysical S_17 factor

Details On the extrapolation of the astrophysical S_17 factor On the extrapolation of the astrophysical S_17 factor

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dnp..e303k&link_type=abstract

American Physical Society, Division of Nuclear Physics Meeting, October 28-31, 1998 Santa Fe, New Mexico, abstract #E3.03

Physics

Nuclear Physics

Scientific paper

We investigate the energy dependence of the astrophysical S_17 factor for the reaction ^7Be(p,γ)^8B. Near the Gamow energy ~ 20 keV, the S_17 factor is dominated by a simple pole arising from the subthreshold ^8B ground state. Below 400 keV the energy dependence is constrained by the data for the elastic scattering of low energy neutrons from ^7Li. Above that energy nuclear distortion of the wave function of the incident proton introduces a significant model dependence. This is particularly important for the s-wave contribution. We discuss the energy dependence in relation to a simple one-body model, and compare our results to other model calculations.

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