Astrophysical Reaction Rate of 12C(α, γ)16O

Details Astrophysical Reaction Rate of 12C(α, γ)16O Astrophysical Reaction Rate of 12C(α, γ)16O

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...567..643k&link_type=abstract

The Astrophysical Journal, Volume 567, Issue 1, pp. 643-650.

Astronomy and Astrophysics

Astronomy

104

Galaxy: Abundances, Nuclear Reactions, Nucleosynthesis, Abundances, Stars: Abundances, Stars: Evolution, Stars: Supernovae: General

Scientific paper

A new astrophysical reaction rate of 12C(α, γ)16O has been calculated based on our recent determination of the E1- and E2-capture cross sections. The R-matrix method has been applied to describe the SE1- and SE2-factor functions as well as the data of elastic α scattering and the β-delayed α decay of 16N from other experiments. The resulting reaction rate for stellar temperatures of T9=0.04-10 is presented in both tabular form and an analytic expression. A new temperature dependence of the reaction rate was obtained when compared with reported evaluations. The associated uncertainties were reduced considerably in comparison to previous determinations.

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