Nonlinear Rayleigh-Taylor evolution of a three-dimensional multimode perturbation

被引：68

作者：

Marinak, MM ^{[1
]}

Glendinning, SG ^{[1
]}

Wallace, RJ ^{[1
]}

Remington, BA ^{[1
]}

Budil, KS ^{[1
]}

Haan, SW ^{[1
]}

Tipton, RE ^{[1
]}

Kilkenny, JD ^{[1
]}

机构：

[1] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.80.4426

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ablation front Rayleigh-Taylor evolution of a well-characterized 3D multimode surface perturbation was measured on a foil accelerated with an x-ray drive as it progressed into the weakly nonlinear regime. The perturbation pattern was locally random and consisted of modes within the first ten harmonics of a 300 mu m square. The pattern evolved into bubbles separated by narrow, interconnecting spike sheets, unambiguously indicating entry into the nonlinear regime. Nonlinear effects occurred when mode amplitudes were relatively small: eta(n) much less than lambda(n)/10. Experimental results are in quantitative agreement with results of our numerical simulations.

引用

页码：4426 / 4429

页数：4

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