Other
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phrvc..62e5804b&link_type=abstract
Physical Review C (Nuclear Physics), Volume 62, Issue 5, November 2000, id.055804
Other
31
Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments, Elastic Proton Scattering, Elastic Scattering, 6<=A<=19
Scientific paper
Knowledge of the 17F(p,γ)18Ne reaction rate is important for understanding stellar explosions, but it was uncertain because the properties of an expected but previously unobserved 3+ state in 18Ne were not known. This state would provide a strong s-wave resonance for the 17F+p system and, depending on its excitation energy, could dominate the stellar reaction rate at temperatures above 0.2 GK. We have observed this missing 3+ state by measuring the 1H(17F,p)17F excitation function with a radioactive 17F beam at the ORNL Holifield Radioactive Ion Beam Facility (HRIBF). We find that the state lies at a center-of-mass energy of Er=599.8+/-1.5stat+/-2.0sys keV (Ex=4523.7+/-2.9 keV) and has a width of Γ=18+/-2stat+/-1sys keV. The measured properties of the resonance are only consistent with a Jπ=3+ assignment.
Bardayan Daniel W.
Blackmon Jeff C.
Brune Carl R.
Champagne Arthur E.
Chen Aiqing
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