Multimode Rayleigh-Taylor experiments on Nova.
Multimode Rayleigh-Taylor experiments on Nova.
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DOI：
10.1103/physrevlett.73.545
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发表时间：
1994-07
影响因子：
8.6
通讯作者：
B. Remington;S. Weber;M. Marinak;S. W. Haan;J. Kilkenny;R. J. Wallace;G. Dimonte
中科院分区：
文献类型：
--
作者：
B. Remington;S. Weber;M. Marinak;S. W. Haan;J. Kilkenny;R. J. Wallace;G. Dimonte
用x射线烧蚀加速的方法对平面CH（Br）箔进行了多模瑞利-泰勒实验。这些扰动由两个或八个正弦波的叠加组成。在线性模式下，模态独立生长，但在非线性模式下变得耦合，导致出现[数字k][次[数字i]][正负][数字k][次[数字j]]拍振模。这导致扰动重新分布到更宽的傅立叶谱中，从而导致形状的变化：气泡变宽，尖峰变窄。扰动的总体大小没有显著改变。
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.