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

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

doi:10.1051/epjconf/201716501054

All issues

Volume 165 (2017)

EPJ Web Conf., 165 (2017) 01054

Abstract

Open Access

Issue		EPJ Web Conf. Volume 165, 2017 Nuclear Physics in Astrophysics VIII (NPA8 2017)


Article Number		01054
Number of page(s)		6
DOI		https://doi.org/10.1051/epjconf/201716501054
Published online		30 December 2017

EPJ Web of Conferences 165, 01054 (2017)
https://doi.org/10.1051/epjconf/201716501054

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

R. Wilkinson¹^*, G. Lotay¹^,2, A. Lennarz³, C. Ruiz³, G. Christian⁴^,5^,6, C. Akers³^**, W. N. Catford¹, A. A. Chen⁷, D. Connolly³, B. Davids³, D. A. Hutcheon³, D. Jedrejcic⁸, A. M. Laird⁹, L. Martin³, E. McNeice⁷, J. Riley⁹ and M. Williams³^,9

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

Abstract

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 E_c.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.

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/).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.