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

Journal Article · Tue Aug 15 00:00:00 EDT 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2227272· OSTI ID:20860164

Aglitskiy, Y; Metzler, N; Karasik, M; Serlin, V; Velikovich, A L; Obenschain, S P; Mostovych, A N; Schmitt, A J; Weaver, J; Gardner, J H; Walsh, T ^[1]

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1. Science Applications International Corporation, McLean, Virginia 22150 (United States)

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.

• OSTI ID: 20860164
• Journal Information: Physics of Plasmas, Vol. 13, Issue 8; Other Information: DOI: 10.1063/1.2227272; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
DISTURBANCES
FOAMS
INTERFACES
LASER TARGETS
LASER-PRODUCED PLASMA
LASERS
PLASMA PRODUCTION
PLASTICS
RAYLEIGH-TAYLOR INSTABILITY
SHOCK WAVES