https://doi.org/10.1051/epjconf/201716501054
Constraining the 19Ne(p,γ)20Na Reaction Rate Using a Direct Measurement at DRAGON
1 Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
2 National Physical Laboratory, Teddington, Middlesex, TW11 0LW, United Kingdom
3 TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
4 Cyclotron Institute, Texas A&M University, College Station, Texas 77843-3366, USA
5 Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-3366, USA
6 Nuclear Solutions Institute, Texas A&M University, College Station, Texas 77843-3366, USA
7 Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
8 Colorado School of Mines, Golden, Colorado 80401, USA
9 Department of Physics, The University of York, York YO10 5DD, United Kingdom
* e-mail: r.wilkinson@surrey.ac.uk
** Present address: Rare Isotope Science Project, Institute for Basic Science, Daejeon, 305-811, Republic of Korea
Published online: 30 December 2017
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.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
