Measurement of {sup 17}O(p,gamma){sup 18}F between the narrow resonances at E{sub r}{sup lab}=193 and 519 keV

Journal Article · Thu Apr 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.045801· OSTI ID:21388978

Newton, J R; Iliadis, C; Champagne, A E; Cesaratto, J M; Daigle, S; Longland, R ^[1]

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1. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina, 27599-3255 (United States) and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308 (United States)

The {sup 17}O(p,gamma){sup 18}F reaction sensitively influences hydrogen burning nucleosynthesis in a number of stellar sites, including classical novae. These thermonuclear explosions, taking place in close binary star systems, produce peak temperatures in the range of T=100-400 MK. Recent results indicate that the thermonuclear rates for this reaction in this particular temperature range are dominated by the direct capture process. We report on the measurement of the {sup 17}O(p,gamma){sup 18}F cross section between the narrow resonances at E{sub r}{sup lab}=193 and 519 keV, where the S factor is expected to vary smoothly with energy. We extract the direct capture contribution from the total cross section and demonstrate that earlier data are inconsistent with our results.

• OSTI ID: 21388978
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BINARY STARS
CAPTURE
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DECAY
EXPLOSIONS
FLUORINE 18
FLUORINE ISOTOPES
GAMMA DECAY
HADRON REACTIONS
HOURS LIVING RADIOISOTOPES
HYDROGEN BURNING
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
NANOSECONDS LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEAR EXPLOSIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
OXYGEN 17 TARGET
PEAKS
PROTON REACTIONS
RADIOISOTOPES
RESONANCE
STAR BURNING
STARS
SYNTHESIS
TARGETS
TEMPERATURE RANGE
THERMONUCLEAR EXPLOSIONS
TOTAL CROSS SECTIONS