Indirect study of the astrophysically important 15O(α,γ)19Ne reaction through 2H(18Ne,19Ne)1H

A.M. Laird, S. Cherubini, A.N. Ostrowski, M. Aliotta, T. Davinson, A. Di Pietro, P. Figuera, D. Groombridge, W. Galster, J.S. Graulich, J. Hinnefeld, M. Lattuada, P. Leleux, L. Michel, A. Musumarra, A. Ninane, M.G. Pellegriti, A.C. Shotter, A. Spitaleri, A. TuminoJ. Vervier, P. Woods

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Abstract

The 15O(α,γ)19Ne reaction is generally considered as a potential breakout reaction from the hot CNO cycle. Under nova conditions, the reaction rate is dominated by a single sub-Coulomb resonance at Ec.m.=504 keV which corresponds to a 19Ne excitation energy of ER=4.033 MeV. Results from a d(18Ne,19Ne)p experiment show that states of astrophysical interest are populated in this reaction. An upper limit for the α-branching ratio of the 4.033 MeV state was identified and branching ratios for other states in 19Ne were found to be in good agreement with stable beam based results.
Original languageEnglish
Article number048801
Pages (from-to)1-4
Number of pages4
JournalPhysical Review C: Nuclear Physics
Volume66
Issue number4
DOIs
Publication statusPublished - Oct 2002

Keywords

  • astrophysics
  • branching ratios
  • plasmas

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