15 January 2008 Dynamics of shock waves generated in liquids by high-energy KrF laser
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Proceedings Volume 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies; 69850R (2008) https://doi.org/10.1117/12.787132
Event: Fundamentals of Laser Assisted Micro- and Nanotechnologies, 2007, St. Petersburg, Russian Federation
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.
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Vladimir Zvorykin, Vladimir Zvorykin, Laurent Berthe, Laurent Berthe, Michael Boustie, Michael Boustie, Alexey Levchenko, Alexey Levchenko, Nikolai Ustinovskii, Nikolai Ustinovskii, } "Dynamics of shock waves generated in liquids by high-energy KrF laser", Proc. SPIE 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies, 69850R (15 January 2008); doi: 10.1117/12.787132; https://doi.org/10.1117/12.787132
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