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: email@example.com
** 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
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