Primordial lithium - new reaction rates, new abundances, new constraints
Journal Article
·
· Astrophys. J.; (United States)
Newly measured nuclear reaction rates for H-3(alpha, gamma)Li-7 (higher than previous values) and Li-7(p, alpha)He-4 (lower than previous values) are shown to increase the Li-7 yield from big band nucleosynthesis for lower baryon-to-photon ratio (less than about 4 x 10 to the 10th). Recent revisions in the He-3(alpha, gamma)Be-7 and the D(p, gamma)He-3 rates enhance the high (greater than 4 x 10 to the 10th) Li-7(Be) production. New, independent determinations of Li abundances in extreme population II stars are in excellent agreement with the work of Spites and give continued confidence in the use of Li-7 in big bang baryon density determinations. 39 references.
- Research Organization:
- NASA/Fermilab Astrophysics Center, Batavia, IL (USA); Chicago Univ., IL (USA); Ohio State Univ., Columbus (USA)
- OSTI ID:
- 7222418
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 327; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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