First direct measurement of the F17(p,γ)Ne18 cross section

K. A. Chipps, Colorado School of Mines
D. W. Bardayan, Oak Ridge National Laboratory
J. C. Blackmon, Louisiana State University
K. Y. Chae, The University of Tennessee, Knoxville
U. Greife, Colorado School of Mines
R. Hatarik, Rutgers University–New Brunswick
R. L. Kozub, Tennessee Technological University
C. Matei, Oak Ridge Associated Universities
B. H. Moazen, The University of Tennessee, Knoxville
C. D. Nesaraja, Oak Ridge National Laboratory
S. D. Pain, Oak Ridge National Laboratory
W. A. Peters, Rutgers University–New Brunswick
S. T. Pittman, The University of Tennessee, Knoxville
J. F. Shriner, Tennessee Technological University
M. S. Smith, Oak Ridge National Laboratory


The rate of the F17(p,γ)Ne18 reaction is important in various astrophysical events. A previous F17(p,p)F17 measurement identified a 3+ state providing the strongest resonance contribution, but the resonance strength was unknown. We have directly measured the F17(p,γ)Ne18 reaction using a mixed beam of F17 and O17 at ORNL. The resonance strength for the 3+ resonance in Ne18 was found to be ωγ=33±14(stat)±17(syst)meV, corresponding to a γ width of Γγ=56±24(stat) ±30(syst)meV. An upper limit on the direct capture of S(E)≤65keVb was determined at an energy of 800keV. © 2009 The American Physical Society.