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Proceedings Paper

Dynamics of shock waves generated in liquids by high-energy KrF laser
Author(s): Vladimir Zvorykin; Laurent Berthe; Michael Boustie; Alexey Levchenko; Nikolai Ustinovskii
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Paper Abstract

The paper is devoted to R&D of novel experimental technique - laser-driven shock tube (LST) for modeling of Rayleigh-Taylor (R-T) and Richtmyer-Meshkov (R-M) hydrodynamic instabilities development at the contact surface of two immiscible liquids under a shock wave (SW) passage. 100-J, 100-ns KrF laser facility GARPUN has been used to irradiate some opaque liquids. A homogenizing focusing system combined multi-element prism raster and a lens to provide non-uniformity less then few percents across a square 7*7-mm spot, laser intensities being varied in the range of q = 0.004 - 2 GW/cm2. Surface plasma blow off produced a planar SW propagated into the liquid. SW amplitudes as high as 0.8 GPa weakly damping with increasing thickness were measured in dibutyl-phthalate (DBP), which strongly absorbed UV laser light. Test bench experiments were performed to produce standing acoustic waves as initial perturbations at the interface between two immiscible liquids.

Paper Details

Date Published: 15 January 2008
PDF: 10 pages
Proc. SPIE 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies, 69850R (15 January 2008); doi: 10.1117/12.787132
Show Author Affiliations
Vladimir Zvorykin, P.N. Lebedev Physical Institute (Russia)
Laurent Berthe, Lab. pour l’Application des Lasers de Puissance, CNRS (France)
Michael Boustie, Lab. de Combustion et de Détonique, CNRS, Univ. de Poitiers-ENSMA (France)
Alexey Levchenko, P.N. Lebedev Physical Institute (Russia)
Nikolai Ustinovskii, P.N. Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 6985:
Fundamentals of Laser Assisted Micro- and Nanotechnologies
Vadim P. Veiko, Editor(s)

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