J. Phys. IV France
Volume 133, June 2006
Page(s) 1139 - 1141
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 1139-1141

DOI: 10.1051/jp4:2006133232

Multi-MeV laser-produced particle sources: Characterization by activation techniques

M. Gerbaux1, M.M. Aléonard1, G. Claverie1, F. Gobet1, F. Hannachi1, G. Malka1, J.N. Scheurer1, M. Tarisien1, V. Méot2, P. Morel2, J. Faure3, Y. Glinec3, A. Guemnie-Tafo3, V. Malka3, M. Manclossi3 and J. Santos3

1  Centre d'Études Nucléaires de Bordeaux-Gradignan, BP. 120, 33175 Gradignan, France
2  CEA/DAM Île de France, France
3  LOA-ENSTA/Polytechnique, Palaiseau, France

We present here results obtained in an experiment carried out using the CPA beam of the "Salle Jaune" laser system at Laboratoire d'Optique Appliquée (LOA). The generation of high energy electrons and protons escaping from the plasma has been investigated in the interaction of a 2 J, 30 fs laser with CH or metallic foils. The energy and angular distributions of the supra-thermal electrons produced with different targets are characterized by using both an electron spectrometer and bremsstrahlung induced ($\gamma $,n) reactions. We measured simultaneously the number of energetic protons produced using (p,n) reactions. A correlation between the electrons and the protons production is observed together with a dependence of the number of supra-thermal electrons on the atomic number of the target element.

© EDP Sciences 2006