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Published December 1, 1991 | public
Journal Article Open

Level matrix, 16N β decay, and the 12C(α,γ)16O reaction


The level matrix corresponding to the scrK-matrix parametrization of a resonant nuclear reaction is derived and applied to the spectrum of α particles emitted following 16N β decay. The parametrized spectrum is fitted to data simultaneously with the E1 capture cross section of the 12C(α,γ)16O reaction and the p-wave phase shift of 12C(α,α)12C. Our analysis shows that new measurements of the α spectrum from 16N β decay could be used to significantly reduce the uncertainty of the 12C(α,γ)16O astrophysical S factor at 0.3 MeV. Various constraints on the parameters are analyzed and suggestions are made for further reducing the uncertainty in this crucial reaction rate.

Additional Information

©1991 The American Physical Society Received 1 April 1991 The authors are grateful to R.E. Azuma, F.C. Barker, and C.A. Barnes for useful discussions. B.W.F. acknowledges support from the A.P. Sloan Research Foundation. This work was supported in part by National Science Foundation Grants No. PHY88-17296 and No. PHY90-13248.


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