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Perturbation evolution started by Richtmyer-Meshkov instability in planar laser targets

Phys. Plasmas 13, 080703 (2006); doi:10.1063/1.2227272

Published 24 August 2006

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Y. Aglitskiy and N. Metzler
Science Applications International Corporation, McLean, Virginia 22150

M. Karasik, V. Serlin, A. L. Velikovich, S. P. Obenschain, A. N. Mostovych, A. J. Schmitt, and J. Weaver
Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375

J. H. Gardner
Berkeley Research Associates, Inc., Beltsville, Maryland 20705

T. Walsh
Schafer Corporation, Livermore, California 94550
The first observations of the interaction of the Richtmyer-Meshkov (RM) instability with reflected shock and rarefaction waves in laser-driven targets are reported. The RM growth is started by a shock wave incident upon a rippled interface between low-density foam and solid plastic. The subsequent interaction of secondary rarefaction and/or shock waves arriving from the ablation front and the rear surface of the target with the RM-unstable interface stops the perturbation growth and reverses its direction. The ensuing exponential Rayleigh-Taylor growth thus can sometimes proceed with an inverted phase. ©2006 American Institute of Physics
History: Received 1 March 2006; accepted 15 June 2006; published 24 August 2006
Permalink: http://link.aip.org/link/?PHPAEN/13/080703/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.57.Fg
    Implosion symmetry and hydrodynamic instability for laser ICF including Rayleigh-Taylor, Richtmyer-Meshkov, imprint, etc
  • 47.20.-k
    Hydrodynamic stability
  • 52.70.La
    X-ray and gamma-ray plasma diagnostic measurements
  • YEAR: 2006

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ISSN:
1070-664X (print)   1089-7674 (online)
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