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Published April 1, 1990 | public
Journal Article Open

Constraints on the 12C(α,γ)16O astrophysical S factor from the beta-delayed α emission of 16N


The E1 astrophysical S factor for the 12C(α,γ)16O reaction is studied using R-matrix theory. The constraints on this quantity from the α-particle spectrum following 16N β decay are investigated with a set of pseudodata in an attempt to identify what additional information might be extracted from future measurements. The possibility of an experimental separation of the p- and f-wave α particles is discussed. Additional precise measurements of the β-delayed α particles at total center-of-mass energies near 1.0 MeV and the (α,γ) cross section at energies below and above previous measurements are particularly useful in constraining the S factor.

Additional Information

©1990 The American Physical Society Received 17 July 1989 The authors thank F.C. Barker for providing information on his R-matrix analyses and for helpful comments on the manuscript. This work was supported by the National Science Foundation under Grant Nos. PHY88-17296 and PHY86-04197. B.W.F. acknowledges support from the Sloan Research Foundation.


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