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Nuclear γ-ray line emission induced by energetic ions in solar flares and by galactic cosmic rays
Kiener J., Tatischeff V., Benhabiles-Mezhoud H., De Séréville N., Belhout A.
Dans Journal of Physics Conference Series - 19th International School on Nuclear Physics, Neutron Physics and Applications, Varna : Bulgarie (2011) - http://hal.in2p3.fr/in2p3-00737882
Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysique
Planète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique
Nuclear γ-ray line emission induced by energetic ions in solar flares and by galactic cosmic rays
J. Kiener1, V. Tatischeff1, H. Benhabiles-Mezhoud1, N. De Séréville2, A. Belhout
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
http://www-csnsm.in2p3.fr/
CNRS : UMR8609 – IN2P3 – Université Paris XI - Paris Sud
batiments 104 et 108 - 91405 Orsay Campus
France
2 :  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
CSNSM AN
The γ-ray spectra ol the strongest solar flares often show a broad and complex structure in the 0.1-10 MeV region sitting on a bremsstrahlung continuum. This structure is composed of several outstanding narrow lines and of thousands of unresolved narrow and broad lines forming a quasi-continuum. The major part of this emission is due to prompt deexcitation lines following nuclear interactions of accelerated light and heavy ions with the atomic nuclei composing the solar atmosphere. A similar emission is expected from interactions of galactic cosmic rays with the interstellar gas and dust. Experimental nuclear reaction studies coupled with extensive calculations have been done in the last one and a half decade at Orsay for the modelisation of this γ-ray emission. After a description of the nuclear reaction studies the analysis of one solar flare spectrum and predictions for the emission from the inner Galaxy will be presented.

Communications avec actes
05/2012
2011
Journal of Physics Conference Series
internationale
366
012026

19th International School on Nuclear Physics, Neutron Physics and Applications
Varna
Bulgarie
19/09/2011
25/09/2011

CSNSM AN
CROSS-SECTIONS RELEVANT – PARTICLE-INDUCED REACTIONS – O-16 NUCLEI – ASTRONOMY – C-12 – HELIOSPHERE