First Direct Measurement of the $^{17}$F($p,\gamma$)$^{18}$Ne Cross Section

ORAL

Abstract

The rate of the $^{17}$F($p,\gamma$)$^{18}$Ne reaction is of significant importance in astrophysical events like novae and x-ray bursts. A $3^{+}$ state in $^{18}$Ne predicted to dominate the rate was found at 599.8 keV using the $^{17}$F($p,p$)$^{17}$F reaction [1], but the resonance strength was unknown. For the first time, the $^{17}$F($p,\gamma$)$^{18}$Ne reaction has been measured directly with the Daresbury Recoil Separator, using a mixed beam of radioactive $^{17}$F and stable $^{17}$O from the HRIBF at ORNL. Resonant proton capture cross sections, $\gamma$ widths, and resonance strengths for the 599.8 keV and 1178 keV resonances will be reported, as well as an upper limit on the direct capture cross section at an intermediate energy. [1] Bardayan et al., Phys. Rev. C \textbf{62} 055804 (2000)

*This work is supported by the US DOE.

Authors

  • K.A. Chipps

  • U. Greife

    • Colorado School of Mines
  • D.W. Bardayan

  • C.D. Nesaraja

  • S.D. Pain

  • M.S. Smith

    • Oak Ridge National Laboratory
  • J.C. Blackmon

    • Louisiana State University
  • K.Y. Chae

  • B.H. Moazen

  • S.T. Pittman

    • University of Tennessee Knoxville
  • R. Hatarik

  • W.A. Peters

    • Rutgers University
  • R.L. Kozub

  • J.F. Shriner

    • Tennessee Technological University
  • C. Matei

    • Oak Ridge Associated Universities