J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 405-408
Behaviour of fast electron transport in solid targetsM. Koenig1, S.D. Baton1, A. Benuzzi-Mounaix1, J. Fuchs1, B. Loupias1, P. Guillou1, D. Batani2, A. Morace2, D. Piazza2, R. Kodama3, T. Norimatsu3, M. Nakatsutsumi3, Y. Aglitskiy4 and C. Rousseaux5
1 Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605, CNRS - CEA, Universitá Paris VI, École Polytechnique, 91128 Palaiseau Cedex, France
2 Dipartimento di Fisica "G. Occhialini", Università di Milano-Bicocca and INFM, Piazza Della Scienze 3, 20126 Milano, Italy
3 Institute of Laser Engineering, 2-6 Yamada-Oka, Suita, Osaka 565-0871, Japan
4 Science Applications International Corporation, McLean, Virginia 22102, USA
5 CEA DIF, BP. 12, 91680 Bruyères-le-Châtel, France
One of the main issues of the fast ignitor scheme is the role of fast electron transport in the solid fuel heating. Recent experiments used a new target scheme based on the use of cone to guide the PW laser and enhance the electron production. In this context it is fundamental to understand the physics underlying this new target scheme. We report here recent and preliminary results of ultra-intense laser pulse interaction with three layer targets in presence of the cone or without. Experiments have been performed at LULI with the 100 TW laser facility, at intensities up to 3 1019 W/cm2. Several diagnostics have been implemented (2D K imaging, K spectroscopy and rear side imaging, protons emission) to quantify the cone effect.
© EDP Sciences 2006