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7Be(p,gamma)8B astrophysical S-factor from precision cross section measurements

A. R. Junghans, E. C. Mohrmann, K. A. Snover, T. D. Steiger, E. G. Adelberger, J. -M. Casandjian, H. E. Swanson, L. Buchmann, S. H. Park, A. Zyuzin

nucl-exarXiv:nucl-ex/0111014

Abstract

We measured the 7Be(p,gamma)8B cross section from Ecm = 186 to 1200 keV, with a statistical-plus-systematic precision per point of better than +- 5%. All important systematic errors were measured including 8B backscattering losses. We obtain S17(0) = 22.3 +- 0.7(expt) +- 0.5(theor) eV-b from our data at Ecm <= 300 keV and the theory of Descouvemont and Baye.

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