Kinematically complete measurement of the 1H(18F,p)18F excitation function for the astrophysically important 7.08-MeV state in 19Ne -: art. no. 042802

Knowledge of the astrophysical F-18(p, alpha)O-15 rate is important for understanding gamma-ray emission from novae and heavy-element production in x-ray bursts. A state with E-x similar or equal to 7.08 MeV in Ne-19 provides an s-wave resonance and, depending on its properties,could dominate the F-18(p, alpha)O-15 rate. By measuring a kinematically complete H-1(F-18, p)F-18 excitation function with a radioactive F-18 beam at the ORNL Holifield Radioactive Ion Beam Facility, we find that the Ne-19 state lies at a center-of-mass energy of 665.3 +/- 1.7 keV (E-x = 7077 +/- 2 keV), has a total width of 38.5 +/- 3.4 keV, and a proton partial-width of 15.8 +/- 1.6 keV.