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Large growth Rayleigh-Taylor experiments using shaped laser pulses

1991; American Physical Society; Volume: 67; Issue: 23 Linguagem: Inglês

10.1103/physrevlett.67.3259

1092-0145

B. A. Remington, S. W. Haan, S. G. Glendinning, J. D. Kilkenny, D. H. Munro, R. J. Wallace,

Laser-Matter Interactions and Applications

Larege growth Rayleigh-Taylor (RT) experiments have been conducted by pulse-shaped radiative acceleration of planar fluorosilicone foils with 50-\ensuremath{\mu}m wavelength initial surface perturbations. Foils with large-amplitude initial perturbation quickly enter the nonlinear RT regime, and show little growth. Foils with very-small-amplitude initial perturbations grow exponentially for longer, and show much larger growth factors. From comparisons with two-dimensional computer simulations, we deduce that the observed growth is about 60% of that expected for classical RT growth.