Relativistic High-Current Electron-Beam Stopping-Power Characterization in Solids and Plasmas: Collisional Versus Resistive Effects - ENSTA Paris - École nationale supérieure de techniques avancées Paris Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2012

Relativistic High-Current Electron-Beam Stopping-Power Characterization in Solids and Plasmas: Collisional Versus Resistive Effects

B. Vauzour
  • Fonction : Auteur
H. P. Schlenvoigt
  • Fonction : Auteur
X. Vaisseau
  • Fonction : Auteur
Ph Nicolai
  • Fonction : Auteur
F. N. Beg
  • Fonction : Auteur
M. Coury
  • Fonction : Auteur
L. C. Jarrot
  • Fonction : Auteur
Y. J. Rhee
  • Fonction : Auteur
L. Volpe
  • Fonction : Auteur

Résumé

We present experimental and numerical results on intense-laser-pulse-produced fast electron beams transport through aluminum samples, either solid or compressed and heated by laser-induced planar shock propagation. Thanks to absolute K-alpha yield measurements and its very good agreement with results from numerical simulations, we quantify the collisional and resistive fast electron stopping powers: for electron current densities of approximate to 8 x 10(10) A/cm(2) they reach 1.5 keV/mu m and 0.8 keV/mu m, respectively. For higher current densities up to 10(12) A/cm(2), numerical simulations show resistive and collisional energy losses at comparable levels. Analytical estimations predict the resistive stopping power will be kept on the level of 1 keV/mu m for electron current densities of 10(14) A/cm(2), representative of the full-scale conditions in the fast ignition of inertially confined fusion targets.

Dates et versions

hal-01561850 , version 1 (13-07-2017)

Identifiants

Citer

B. Vauzour, J. J. Santos, A. Debayle, S. Hulin, H. P. Schlenvoigt, et al.. Relativistic High-Current Electron-Beam Stopping-Power Characterization in Solids and Plasmas: Collisional Versus Resistive Effects. Physical Review Letters, 2012, 109 (25), ⟨10.1103/PhysRevLett.109.255002⟩. ⟨hal-01561850⟩
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