Theory of the Ablative Richtmyer-Meshkov Instability

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.2091· OSTI ID:321533

Goncharov, V N ^[1]

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1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

Theory of the ablative Richtmyer-Meshkov instability is presented. It is shown that the main stabilizing mechanism of the ablation-front perturbations during the shock transit time is the dynamic overpressure that causes perturbation oscillations. The amplitude of the oscillation is proportional to c{sub s}/{radical}(V{sub a}V{sub bl}) and its frequency is {omega}=k{radical}(V{sub a}V{sub bl}) , where k is the wave number, and c{sub s} , V{sub a} , and V{sub bl} are sound speed, ablation, and blow-off plasma velocities, respectively. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: University of Rochester
• DOE Contract Number: FC03-92SF19460
• OSTI ID: 321533
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
INERTIAL CONFINEMENT
INSTABILITY GROWTH RATES
LASER-PRODUCED PLASMA
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
RAYLEIGH-TAYLOR INSTABILITY
SHOCK WAVES