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Resonances in 19Ne with relevance to the astrophysically important 18F(p,$\alpha$)15O reaction
Mountford D., J. Murphy A., Davinson T., Woods P.J., Achouri N.L. et al
in PoS - Proceedings of Science - VI European Summer School on Experimental Nuclear Astrophysics, Acireale : Italy (2011) - http://hal.in2p3.fr/in2p3-00702716
Physique/Physique Nucléaire Expérimentale
Physique/Astrophysique/Astrophysique stellaire et solaire
Planète et Univers/Astrophysique/Astrophysique stellaire et solaire
Resonances in 19Ne with relevance to the astrophysically important 18F(p,$\alpha$)15O reaction
D. Mountford, A.St J. Murphy, T. Davinson, P.J. Woods, N.L. Achouri1, C. Angulo, J.R. Brown, A.M. Laird, F. de Oliveira Santos2, O. Kamalou2, P. Ujic2, N. De Séréville3, P. Descouvemont, S.T. Pittman
1 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
http://www.lpc-caen.in2p3.fr/
CNRS : UMR6534 – IN2P3 – Université de Caen Basse-Normandie – Ecole Nationale Supérieure d'Ingénieurs de Caen
ENSICAEN - 6, boulevard du Marechal Juin 14050 Caen Cedex
France
2 :  GANIL - Grand Accélérateur National d'Ions Lourds
http://www.ganil-spiral2.eu
CNRS : UPR3266 – IN2P3 – CEA : DSM/GANIL
Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5
France
3 :  IPNO - Institut de Physique Nucléaire d'Orsay
http://ipnweb.in2p3.fr
CNRS : UMR8608 – IN2P3 – Université Paris XI - Paris Sud
IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX
France
Structure nucléaire
The main source of gamma ray emission from novae below 511 keV is likely to be associated with the beta+ decay of 18F. The main uncertainty in the abundance of this nucleus comes from the 18F(p,alpha)15O reaction. In 2006, through microscopic techniques, two previously unseen energy levels in the compound 19Ne nucleus, at 6 and 7.9 MeV were proposed by Dufour and Descouvemont. In light of this there have been two published attempts in the search for the higher of these states, by Murphy et al. and Dalouzy et al.. The aim of this work is to address the contradiction between these works and come to a conclusion as to the possible existence of this state. An experiment has taken place that utilised a 4 MeV/u 18F beam, degraded to 1.9 MeV/u, incident upon a thick CH2 target. The data has been analysed within the R-matrix formalism and preliminary results are presented here.

Communications avec actes
2012
2011
PoS - Proceedings of Science
internationale
ENAS 6
050
Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence

VI European Summer School on Experimental Nuclear Astrophysics
Acireale
Italie
18/09/2011
27/09/2011
David Mountford

GANIL 2012-066 A