J. Phys. IV France
Volume 133, June 2006
Page(s) 967 - 971
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 967-971

DOI: 10.1051/jp4:2006133194

Modeling of ultra-fast ionization dynamics in intense short pulse laser-solid interaction

A.J. Kemp1, Y. Sentoku1, T.E. Cowan1, V. Sotnikov1 and S.C. Wilks2

1  Department of Physics, University of Nevada, Reno, Nevada, USA
2  Lawrence Livermore National Laboratory, Livermore, California, USA

We investigate energy transfer from laser-generated hot electrons to thermal cold electrons in solid targets at relativistic laser intensities, using analytical methods and numerical particle simulations. We find that (1) there can be a competition between two interdependent processes, i.e. energy transfer via a collisionless Langmuir turbulence and binary Coulomb collisions, and (2) there can be a significant effect of collisions in slowing down or even completely suppressing Langmuir turbulence, depending on the plasma parameters of the background plasma.

© EDP Sciences 2006