Multimode Rayleigh-Taylor experiments on Nova

Journal Article · Mon Jul 25 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.545· OSTI ID:7130968

Remington, B A; Weber, S V; Marinak, M M; Haan, S W; Kilkenny, J D; Wallace, R; Dimonte, G ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

Multimode Rayleigh-Taylor experiments have been conducted with planar CH(Br) foils accelerated by x-ray ablation. The pertubations consisted of the superposition of either two or eight sinusoids. In the linear regime the modes grow independently, but become coupled in the nonlinear regime, leading to the appearance of [ital k][sub [ital i]][plus minus][ital k][sub [ital j]] beat'' modes. This results in a redistribution of the perturbation into a broader Fourier spectrum causing a change of shape: bubbles become broader and spikes narrower. The overall size of the perturbation is not significantly altered.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7130968
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:4; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310* -- Plasma Confinement-- (1992-)
CONFINEMENT
ELECTROMAGNETIC RADIATION
FLUID MECHANICS
FOURIER ANALYSIS
HYDRODYNAMICS
INSTABILITY
LASER RADIATION
MECHANICS
PLASMA CONFINEMENT
RADIATIONS
RAYLEIGH-TAYLOR INSTABILITY