Hydrogen burning of O-17 in classical novae
(2005) Physical Review Letters — Vol. 95, p. 31101 (2006)
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- (en) We report on the observation of a previously unknown resonance at E=194.1+/-0.6 keV (lab) in the 17-O(p,alpha)14-N reaction, with a measured resonance strength omega_gamma(p,alpha)=1.6+/-0.2 meV. We studied in the same experiment the 17-O(p,gamma)18-F reaction by an activation method and the resonance-strength ratio was found to be omega_gamma(p,alpha)/omega_gamma(p,gamma)=470+/-50. The corresponding excitation energy in the 18-F compound nucleus was determined to be 5789.8+/-0.3 keV by gamma-ray measurements using the 14-N(alpha,gamma)18-F reaction. These new resonance properties have important consequences for 17-O nucleosynthesis and gamma-ray astronomy of classical novae. Comment: 4 pages, 4 figures. Accepted for publication in Physical Review Letters
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Chafa, A., Tatischeff, V., Aguer, P., Barhoumi, S., Coc, A., Garrido, F., Hernanz, M., Jose, J., Kiener, J., Lefebvre-Schuhl, A., Ouichaoui, S., de Séréville, N., & Thibaud, J.-P. (2005). Hydrogen burning of O-17 in classical novae. Physical Review Letters, 95, 31101. https://doi.org/10.1103/PhysRevLett.95.031101 (Original work published 2006)