MEASUREMENT OF RADIATION-DRIVEN SHOCK-INDUCED MIXING FROM NONLINEAR INITIAL PERTURBATIONS

被引：35

作者：

PEYSER, TA

MILLER, PL

STRY, PE

BUDIL, KS

BURKE, EW

WOJTOWICZ, DA

GRISWOLD, DL

HAMMEL, BA

PHILLION, DW

机构：

[1] Lawrence Livermore National Laboratory, Livermore

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.75.2332

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first experimental measurement of the growth of a mixing region at a density interface from a high-amplitude, initially nonlinear perturbation. Thermal radiation from a gold Hohlraum irradiated by the Nova laser was used to drive a shock across a perturbed plastic-foam interface in a cylindrical shock tube attached to the Hohlraum. When the effects of target decompression are removed, the width of the mix region was found to grow logarithmically with time- in agreement with recent theories for the nonlinear phase of the Richtmyer-Meshkov instability.

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页码：2332 / 2335

页数：4

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