Astrophysical S factor for Be-9(p,gamma)B-10
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Date
1999
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
The Be-9(p, gamma) B-10 reaction plays an important role in primordial and stellar nucleosynthesis of light elements in the p shell, but the energy dependence of S(E) has not been well understood. We reanalyze the existing Be-9(p, gamma) B-10 experimental data within the framework of the R-matrix method. The direct capture part of the S factor is calculated using the experimentally measured asymptotic normalization coefficients for B-10 --> Be-9 + p. The fitted parameters of the low-lying B-10 resonances are also required to be consistent with previous measurements of Li-6(alpha, gamma) log. A good simultaneous fit to both radiative capture reactions is found, in contrast to previous analyses. These results demonstrate that experimentally measured asymptotic normalization coefficients, coupled to the R-matrix method, can provide a reasonable determination of direct radiative capture rates, even when the captured proton is tightly bound in the final nucleus. [S0556-2813(99)03608-0].
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/
Keywords
THERMONUCLEAR REACTION-RATES, CROSS-SECTION, LIGHT-NUCLEI, LOW ENERGIES, NORMALIZATION, Physics
Citation
A. Sattarov, A. M. Mukhamedzhanov, A. Azhari, Carl A. Gagliardi, L. Trache and Robert E. Tribble. Phys.Rev.C 60 035801 1999. "Copyright (1999) by the American Physical Society."