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Hydrogen Burning ofO17in Classical Novae

Authors :
A. Chafa
N. de Séréville
Vincent Tatischeff
F. Garrido
A. Lefebvre-Schuhl
P. Aguer
S. Barhoumi
S. Ouichaoui
J. Kiener
A. Coc
Margarita Hernanz
Jordi José
J. P. Thibaud
Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM)
Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG)
Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
UCL
Source :
Physical Review Letters, Physical Review Letters, American Physical Society, 2005, 95, 031101 (4 p.). ⟨10.1103/PhysRevLett.95.031101⟩, Physical Review Letters, Vol. 95, p. 031101 (2005\ ERRAT,96,019902.2006)
Publication Year :
2005
Publisher :
American Physical Society (APS), 2005.

Abstract

We report on the observation of a previously unknown resonance at E=194.1+/-0.6 keV (lab) in the 17-O(p,alpha)14-N reaction, with a measured resonance strength omega_gamma(p,alpha)=1.6+/-0.2 meV. We studied in the same experiment the 17-O(p,gamma)18-F reaction by an activation method and the resonance-strength ratio was found to be omega_gamma(p,alpha)/omega_gamma(p,gamma)=470+/-50. The corresponding excitation energy in the 18-F compound nucleus was determined to be 5789.8+/-0.3 keV by gamma-ray measurements using the 14-N(alpha,gamma)18-F reaction. These new resonance properties have important consequences for 17-O nucleosynthesis and gamma-ray astronomy of classical novae.<br />4 pages, 4 figures. Accepted for publication in Physical Review Letters

Details

ISSN :
10797114 and 00319007
Volume :
95
Database :
OpenAIRE
Journal :
Physical Review Letters
Accession number :
edsair.doi.dedup.....d4132eb43b8617f85a2347d623aa8a35
Full Text :
https://doi.org/10.1103/physrevlett.95.031101