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Reaction rate of the 18O(p,alpha)15N reaction at astrophysical temperatures

Abstract : The 18O(p,alpha )15N reaction rate has been deduced by means of the Trojan horse method. For the first time the contribution of the 20 keV resonance has been directly evaluated, giving a value about 35% larger than the one in the literature. Moreover, the present approach has allowed to improve the accuracy by a factor 8.5, as it is based on the measured strength instead of spectroscopic measurements. The contribution of the 90 keV resonance has been also determined, which turned out to be of negligible importance to astrophysics.
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Contributor : Christine Hadrossek <>
Submitted on : Friday, February 17, 2012 - 2:49:14 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:39 PM

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M. La Cognata, C. Spitaleri, A. Mukhamedzhanov, R. E. Tribble, T. Al-Abdullah, et al.. Reaction rate of the 18O(p,alpha)15N reaction at astrophysical temperatures. 53rd Meeting of the Italian Astronomical Society, May 2009, Pise, Italy. pp.111. ⟨in2p3-00671459⟩

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