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

• Main Authors: 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.
• Format: Article
• Language: English
• Published: EDP Sciences 2017-01-01
• Series: EPJ Web of Conferences
• Online Access: https://doi.org/10.1051/epjconf/201716501054

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.