Citation
Vauzour, B. and Santos, J.J. and Debayle, Arnaud Philippe Henri and Hulin, S. and Schlenvoigt, H.-P. and Vaisseau, X. and Batani, D. and Baton, S. D. and Honrubia Checa, José Javier
(2012).
Relativistic high-current electron-beam stopping-power characterization in solids and plasmas: collisional versus resistive effects..
"Physical Review Letters", v. 109
(n. 25);
pp..
ISSN 0031-9007.
https://doi.org/10.1103/PhysRevLett.109.255002.
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� 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 � 8 � 1010 A=cm2 they reach 1:5 keV=�m and 0:8 keV=�m, respectively. For higher current densities up to 1012 A=cm2, 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=�m for electron current densities of 1014 A=cm2, representative of the full-scale conditions in the fast ignition of inertially confined fusion targets.
