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Title:
Production of Lithium, Beryllium, and Boron from Baryon inhomogeneous primordial nucleosynthesis
Authors:
Thomas, David; Schramm, David N.; Olive, Keith A.; Mathews, Grant J.; Meyer, Bradley S.; Fields, Brian D.
Affiliation:
AA(University of Chicago, Chicago, IL, US), AB(University of Chicago, Chicago, IL, US), AC(University of Minnesota, Minneapolis, MN, US), AD(University of Minnesota, Minneapolis, MN, US), AE(Clemson Univ., Clemson, SC, US), AF(Clemson Univ., Clemson, SC, US)
Publication:
The Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 430, no. 1, p. 291-299 (ApJ Homepage)
Publication Date:
07/1994
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ABUNDANCE, ASTRONOMICAL MODELS, BIG BANG COSMOLOGY, COSMOCHEMISTRY, NUCLEAR FUSION, REACTION PRODUCTS, STELLAR COMPOSITION, BARYONS, BERYLLIUM, BORON, INHOMOGENEITY, LITHIUM
DOI:
10.1086/174403
Bibliographic Code:
1994ApJ...430..291T

Abstract

We investigate the possibility that inhomogeneous nucleosynthesis may eventually be used to explain the abundances of Li-6, Be-9, and B in Population II stars. The present work differs from previous studies in that we have used a more extensive reaction network. It is demonstrated that in the simplest scenario the abundances of the light elements with A less than or = 7 constrain the separation of inhomogeneities to sufficently small scales that the model is indistinguishable from homogeneous nucleosynthesis and that the abundnace of Li-6, Be-9, and B are then below observations by several orders of magnitude. This conclusion does not depend on the Li-7 constraint. We also examine alternative scenarios which involve a post-nucleosynthesis reprocessing of the light elements to reproduce the observed abundances of Li and B, while allowing for a somewhat higher baryon density (still well below the cosmological critical density). Future B/H measurements may be able to exclude even this exotic scenario and further restrict primordial nucleosynthesis to approach the homogeneous model conclusions.

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