Observation of mix in a compressible plasma in a convergent cylindrical geometry

Laser beams that directly drive a cylindrical implosion are used to create a measurable region of mixed material in a compressible plasma state, for the first time in a convergent geometry. The turbulence driven by the Richtmyer–Meshkov instability by shock passage across a density discontinuity mix...

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Bibliographic Details
Published in:Physics of plasmas 2002-11, Vol.9 (11), p.4431-4434
Main Authors: Barnes, Cris W., Batha, S. H., Dunne, A. M., Magelssen, G. R., Rothman, Steve, Day, R. D., Elliott, N. E., Haynes, D. A., Holmes, R. L., Scott, J. M., Tubbs, D. L., Youngs, D. L., Boehly, T. R., Jaanimagi, P.
Format: Article
Language:English
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Summary:Laser beams that directly drive a cylindrical implosion are used to create a measurable region of mixed material in a compressible plasma state, for the first time in a convergent geometry. The turbulence driven by the Richtmyer–Meshkov instability by shock passage across a density discontinuity mixes marker material that is radiographically opaque. The width of the mix layer is compared between a system with large surface roughness and an initially smooth system. The experiment is described and results are compared to multi-dimensional numerical simulation, including three-dimensional turbulence calculations. The calculations adequately match the observations provided the measured initial conditions are used.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.1511730