Astrophysical [ital S] factor for [sup 9]Be(p,[gamma])[sup 10]B
- Cyclotron Institute, Texas AM University, College Station, Texas 77843 (United States)
The [sup 9]Be(p,[gamma])[sup 10]B reaction plays an important role in primordial and stellar nucleosynthesis of light elements in the [ital p] shell, but the energy dependence of S(E) has not been well understood. We reanalyze the existing [sup 9]Be(p,[gamma])[sup 10]B experimental data within the framework of the [ital R]-matrix method. The direct capture part of the [ital S] factor is calculated using the experimentally measured asymptotic normalization coefficients for [sup 10]B[r arrow][sup 9]Be+p. The fitted parameters of the low-lying [sup 10]B resonances are also required to be consistent with previous measurements of [sup 6]Li([alpha],[gamma])[sup 10]B. 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 [ital 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. [copyright] [ital 1999] [ital The American Physical Society]
- OSTI ID:
- 6325971
- Journal Information:
- Physical Review, C, Vol. 60:3; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BERYLLIUM 9 TARGET
BORON 10
CAPTURE
NUCLEOSYNTHESIS
PROTON REACTIONS
R MATRIX
STAR MODELS
BARYON REACTIONS
BORON ISOTOPES
CHARGED-PARTICLE REACTIONS
HADRON REACTIONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MATRICES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-ODD NUCLEI
STABLE ISOTOPES
SYNTHESIS
TARGETS
663430* - Nucleon-Induced Reactions & Scattering- (1992-)
661300 - Other Aspects of Physical Science- (1992-)