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Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..831..304c&link_type=abstract
FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS - FINUSTAR. AIP Conference Proceedings, Volume 831, pp. 304-308 (20
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6
Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments, Radiative Capture, Resonance Reactions, 6<=A<=19, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages
Scientific paper
We investigated the proton-capture reactions on 17O occuring in classical nova explosions. We observed a previously undiscovered resonance at ERlab=194.1+/-0.6 keV in the 17O(p,α)14N reaction, with a measured resonance strength ωγpα=1.6+/-0.2 meV. We studied in the same experiment the 17O(p,γ)18F reaction by an activation method and the resonance-strength ratio was found to be ωγpα/ωγpγ=470+/-50. The corresponding excitation energy in the 18F compound nucleus was determined to be 5789.8+/-0.3 keV by γ-ray measurements using the 14N(α,γ)18F reaction. These new resonance properties have important consequences for 17O nucleosynthesis and γ-ray astronomy of classical novae.
Aguer P.
Barhoumi S.
Chafa A.
Coc Alain
de Séréville N.
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