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The Rate of the ^(14)N(ɑ,γ)^(18)F Reaction

Couch, R. G. and Spinka, H. and Tombrello, T. A. and Weaver, T. A. (1972) The Rate of the ^(14)N(ɑ,γ)^(18)F Reaction. Astrophysical Journal, 172 . pp. 395-401. ISSN 0004-637X. doi:10.1086/151359.

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New experimental and theoretical results are presented on the 14N(ɑ,γ)^(18)F reaction. A new resonance has been found at E_ɑ = 0.56 MeV with (2J + l)ΓɑΓγ/Γ = 2.8 ± 0.5 X 10^(-4) eV (lab). From a theoretical calculation of the cross-section for direct radiative capture, and an extrapolation of the tails of the measured resonances to E_ɑ = 0.0, a value S ≈ 0.7 MeV-barns is estimated for the nonresonant S-factor. The reaction rate is calculated, and the significance of this rate is discussed. It is found that in most stars ɑ-capture by ^(14)N takes place after the initiation of helium burning by the 3ɑ → ^(12)C reaction.

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Additional Information:© 1972 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1971 September 29. Supported in part by the National Science Foundation (GP-28027). We wish to express our gratitude to Dr. William A. Fowler and Dr. Charles A. Barnes for many helpful discussions, and to Barbara Zimmerman for her programming assistance.
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Official Citation:The Rate of the ^(14)N(ɑ,y)^(18)F Reaction. Couch, R. G.; Spinka, H.; Tombrello, T. A.; Weaver, T. A. Astrophysical Journal, vol. 172, p.395-401 03/1972
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54711
Deposited By: Ruth Sustaita
Deposited On:11 Feb 2015 18:55
Last Modified:10 Nov 2021 20:37

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