Measurement of low-energy resonances in the $^{22}$Ne($\alpha$,n)$^{25}$Mg Reaction

ORAL

Abstract

The $^{22}$Ne($\alpha$,n)$^{25}$Mg reaction is a key neutron source for the slow neutron-capture process. The reaction rate at stellar energies is most likely dominated by a resonance at 832 keV which experimental strength determination carries a large uncertainty. Due to low resonance strengths at lower energies only upper limits have been previously determined for resonances below 832 keV. Recent measurements were completed for the strengths of those low-energy resonances. These measurements utilized the Compact Accelerator System for Performing Astrophysical Research (CASPAR), located on the 4850-feet level of the Sanford Underground Research Facility (SURF). Preliminary results will be presented.

*This work was supported by the National Science Foundation (NSF) under PHY-1615197 and PHY-1913746, and the Sanford Underground Research Facility under Award Number DE-SC0020216.

Authors

  • Thomas Kadlecek

    • South Dakota School of Mines & Technology
    • South Dakota School of Mines and Technology
  • Frank Strieder

    • South Dakota School of Mines and Technology
    • South Dakota School of Mines & Technology
  • Daniel Robertson

    • University of Notre Dame
  • Mark Hanhardt

    • South Dakota School of Mines & Technology
  • Tyler Borgwardt

    • South Dakota School of Mines & Technology
  • Manoel Couder

    • University of Notre Dame
  • Michael Wiescher

    • University of Notre Dame