Statistics – Computation
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..750k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 15, 1988, p. 750-754. NSF-DOE-NASA-supported research.
Statistics
Computation
62
Abundance, Chemical Evolution, Hydrogen Isotopes, Lithium, Nuclear Fusion, Nuclear Reactions, Baryons, Computational Chemistry, Cosmology, Solar System
Scientific paper
Newly measured nuclear reaction rates for 3H(α, γ)7Li (higher than previous values) and 7Li(p, α)4He (lower than previous values) are shown to increase the 7Li yield from big bang nucleosynthesis for lower baryon-to-photon ratio (η ⪉ 4×1010). In addition, recent revisions in the 3He(α, γ)7Be and the D(p, γ)3He rates enhance the high (η ⪆ 4×1010)7Li(7Be) production. New, independent determinations of Li abundances in extreme Population II stars are in excellent agreement with the earlier work of the Spites and give continued confidence in the use of 7Li in big bang baryon density determinations. A review is made of the strengths and possible weaknesses of utilizing conclusions drawn from big bang lithium considerations. An Appendix discusses the null effect of a factor of 32 increase in the experimental rate for the D(d, γ)4He reaction.
Kawano Lawrence
Schramm David
Steigman Gary
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