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Proceedings Paper

Modeling the absorption of intense, short laser pulses in steep density gradients
Author(s): W. Edward Alley
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Paper Abstract

A subroutine which calculates the absorption of short pulse electromagnetic radiation in a material has been installed into the laser fusion modeling program called LASNEX. Calculational results show the necessity for NLTE physics to account for ionization, the development of non-exponential density profiles for the expanding plasma and movement of the critical point toward the surface which results in Doppler shifts of the reflected light. Comparison of calculations of local scale lengths with experiments shows not only good agreement but the correct scaling with intensity.

Paper Details

Date Published: 1 June 1991
PDF: 6 pages
Proc. SPIE 1413, Short-Pulse High-Intensity Lasers and Applications, (1 June 1991); doi: 10.1117/12.46140
Show Author Affiliations
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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