EPJ Web of Conferences (Jan 2017)

Constraining the 19Ne(p,γ)20Na Reaction Rate Using a Direct Measurement at DRAGON

  • Wilkinson R.,
  • Lotay G.,
  • Lennarz A.,
  • Ruiz C.,
  • Christian G.,
  • Akers C.,
  • Catford W. N.,
  • Chen A. A.,
  • Connolly D.,
  • Davids B.,
  • Hutcheon D. A.,
  • Jedrejcic D.,
  • Laird A. M.,
  • Martin L.,
  • McNeice E.,
  • Riley J.,
  • Williams M.

DOI
https://doi.org/10.1051/epjconf/201716501054
Journal volume & issue
Vol. 165
p. 01054

Abstract

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A direct measurement of the 19Ne(p, γ)20 Na reaction has been performed in inverse kinematics at the DRAGON recoil separator, at an energy ∼ 10 keV higher than previous measurements. The key resonance in the 19 Ne + p system relevant for ONe novae and Type-I X-ray burst temperatures have been successfully measured for the first time. Preliminary estimates of the resonance energy and strength are reported as Ec.m. ≈ 458 keV and ωγ ≈ 18 meV. These results are consistent with previous direct measurements, but disagree with the most recent study of the 19Ne(p, γ)20 Na reaction rate. These preliminary results will be finalised after a forthcoming negative log-likelihood analysis.