The first science result with the JENSA gas-jet target: Confirmation and study of a strong subthreshold F18(p,α)O15 resonance
D.W. Bardayan (Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA, Dept. of Physics, University of Notre Dame, Notre Dame, IN, 46556, USA); K.A. Chipps (Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA, Dept. of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA, Physics Dept., Colorado School of Mines, Golden, CO, 80401, USA); S. Ahn (Dept. of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA, National Superconducting Cyclotron Laboratory, East Lansing, MI, 48824, USA); J.C. Blackmon (Dept. of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, 70803, USA); R.J. deBoer (Dept. of Physics, University of Notre Dame, Notre Dame, IN, 46556, USA); et al - Show all 21 authors
The astrophysical F18(p,α)O15 rate determines, in large part, the extent to which the observable radioisotope 18 F is produced in novae. This rate, however, has been extremely uncertain owing to the unknown properties of a strong subthreshold resonance and its possible interference with higher-lying resonances. The new Jet Experiments in Nuclear Structure and Astrophysics (JENSA) gas-jet target has been used for the first time to determine the spin of this important resonance and significantly reduce uncertainties in the F18(p,α)O15 rate.
