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Proceedings Paper

Hydrodynamic evolution of picosecond laser plasmas
Author(s): Otto L. Landen; Brian-Tinh Vu; Daniel Gorman Stearns; W. Edward Alley
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Paper Abstract

The density profile evolution of picosecond laser-plasmas has been inferred from the angular dependence of the specular reflectivity of a probe picosecond pulse. Time-resolved density profiles, critical density scale-lengths as short as 3 nm and values for the plasma collisionality are presented for a gold target irradiated by a 580 nm, 0.8 ps FWHM laser pulse with a peak intensity of up to 2x1013 Wcm-2. The results are best fitted at early times (<10 ps) by the self-similar isothermal exponential density profile and a critical density collision frequency of 0.3ω, in good agreement with 1-D hydrodynamic simulations.

Paper Details

Date Published: 1 June 1991
PDF: 11 pages
Proc. SPIE 1413, Short-Pulse High-Intensity Lasers and Applications, (1 June 1991); doi: 10.1117/12.46144
Show Author Affiliations
Otto L. Landen, Lawrence Livermore National Lab. (United States)
Brian-Tinh Vu, Lawrence Livermore National Lab. (United States)
Daniel Gorman Stearns, Lawrence Livermore National Lab. (United States)
W. Edward Alley, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 1413:
Short-Pulse High-Intensity Lasers and Applications
Hector A. Baldis, Editor(s)

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