Observation of the Astrophysically Important 3+ State in 18Ne via Elastic Scattering of a Radioactive 17F Beam from 1H

Details Observation of the Astrophysically Important 3+ State in 18Ne via Elastic Scattering of a Radioactive 17F Beam from 1H Observation of the Astrophysically Important 3+ State in 18Ne via Elastic Scattering of a Radioactive 17F Beam from 1H

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phrvl..83...45b&link_type=abstract

Physical Review Letters, Volume 83, Issue 1, July 5, 1999, pp.45-48

Physics

60

Scientific paper

The 17F\(p,γ\)18Ne reaction is important in stellar explosions, but its rate has been uncertain because of an expected 3+ state in 18Ne that has never been conclusively observed. This state would provide a strong l = 0 resonance and, depending on its excitation energy, could dominate the stellar reaction rate. 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. 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.

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