Relativistic high-current electron-beam stopping-power characterization in solids and plasmas: collisional versus resistive effects

B. Vauzour, J. J. Santos, A. Debayle, S. Hulin, H. -P. Schlenvoigt, X. Vaisseau, D. Batani, S. D. Baton, J. J. Honrubia, Ph. Nicolai, F. N. Beg, R. Benocci, S. Chawla, M. Coury, F. Dorchies, C. Fourment, E. d'Humieres, L. C. Jarrot, P. McKenna, Y. J. RheeV. T. Tikhonchuk, L. Volpe, V. Yahia

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Abstract

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.

Original languageEnglish
Article number255002
Number of pages5
JournalPhysical Review Letters
Volume109
Issue number25
DOIs
Publication statusPublished - 18 Dec 2012

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Keywords

  • stopping-power characterization
  • relativistic
  • high-current
  • electron-beam
  • solids
  • plasmas
  • collisional
  • resistive effects

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