Measurement of the inelastic branch of the {sup 14}O({alpha},p){sup 17}F reaction: Implications for explosive burning in novae and x-ray bursters

Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.042801· OSTI ID:21293909

He, J J ^[1]; Woods, P J; Davinson, T; Aliotta, M; Murphy, A St. J. ^[1]; Buescher, J; Neyskens, P; Raabe, R ^[2]; Clement, E; Delahaye, P; Voulot, D; Walle, J van der; Wenander, F ^[3]; Hass, M; Kumar, V ^[4]; Jenkins, D G; Robinson, A P ^[5]; Warr, N ^[6]

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1. School of Physics, University of Edinburgh, Edinburgh EH9 3JZ (United Kingdom)
2. Institut voor Kern-en Stralingsfysica, K. U. Leuven, B-3001, Leuven (Belgium)
3. CERN, CH-1211 Geneva 23 (Switzerland)
4. Weizmann Institute of Science, Rehovot, Il-76100 (Israel)
5. Department of Physics, University of York, Heslington, YO10 5DD (United Kingdom)
6. Institut fur Kernphysik, Universitaet Koln, Koln, D-50937 (Germany)

A measurement of the inelastic component of the key astrophysical resonance in the {sup 14}O({alpha},p){sup 17}F reaction for burning and breakout from hot carbon-nitrogen-oxygen (CNO) cycles is reported. The inelastic component is found to be comparable to the ground-state branch and will enhance the {sup 14}O({alpha},p){sup 17}F reaction rate. The current results for the reaction rate confirm that the {sup 14}O({alpha},p){sup 17}F reaction is unlikely to contribute substantially to burning and breakout from the CNO cycles under novae conditions. The reaction can, however, contribute strongly to the breakout from the hot CNO cycles under the more extreme conditions found in x-ray bursters.

• OSTI ID: 21293909
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 80, Issue 4; Other Information: DOI: 10.1103/PhysRevC.80.042801; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ASTROPHYSICS
CNO CYCLE
EXPLOSIVES
FLUORINE 17
GROUND STATES
INELASTIC SCATTERING
NOVAE
OXYGEN 14 TARGET
PROTON-EMISSION DECAY
REACTION KINETICS
RESONANCE
X RADIATION