The 8Li(α, n)11B Reaction Rate at Astrophysical Temperatures

Details The 8Li(α, n)11B Reaction Rate at Astrophysical Temperatures The 8Li(α, n)11B Reaction Rate at Astrophysical Temperatures

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apj...736..148l&link_type=abstract

The Astrophysical Journal, Volume 736, Issue 2, article id. 148 (2011).

Astronomy and Astrophysics

Astronomy

1

Early Universe, Nuclear Reactions, Nucleosynthesis, Abundances, Supernovae: General

Scientific paper

At temperatures (0.5-1.2) × 109 K, the 8Li + 4He → 11B+n reaction can allow for 12C and heavier element production in the framework of the inhomogeneous big bang nucleosynthesis. At temperatures (2.5-5) × 109 K, it can influence the production of seed nuclei, later burnt to heavier elements by means of rapid neutron capture reactions, during Type II supernova explosions. Previous determinations of the reaction rate show an untenable disagreement. In this work, a new reaction rate calculation is proposed for the intervals of astrophysical interest. This new recommendation turns out to be up to a factor of five larger than the most recent rate in the literature, thus enforcing the role of 8Li + 4He → 11B+n as a candidate for key astrophysical reactions. The analytical expression of the recommended reaction rate is given.

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