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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 language | English |
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Article number | 255002 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 109 |
Issue number | 25 |
DOIs | |
Publication status | Published - 18 Dec 2012 |
Keywords
- stopping-power characterization
- relativistic
- high-current
- electron-beam
- solids
- plasmas
- collisional
- resistive effects
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Dive into the research topics of 'Relativistic high-current electron-beam stopping-power characterization in solids and plasmas: collisional versus resistive effects'. Together they form a unique fingerprint.Projects
- 1 Finished
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Multi-PetaWatt Laser-Plasma Interactions: A New Frontier in Physics
McKenna, P. (Fellow)
EPSRC (Engineering and Physical Sciences Research Council)
1/03/12 → 28/02/17
Project: Research Fellowship