Detailed measurements of a diffusive supersonic wave in a radiatively heated foam

被引：60

作者：

Back, CA ^{[1
]}

Bauer, JD ^{[1
]}

Landen, OL ^{[1
]}

Turner, RE ^{[1
]}

Lasinski, BF ^{[1
]}

Hammer, JH ^{[1
]}

Rosen, MD ^{[1
]}

Suter, LJ ^{[1
]}

Hsing, WH ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.84.274

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have made the first detailed measurements of a diffusive supersonic radiation wave in the laboratory. A 10 mg/cm(3) SiO2 foam is radiatively heated by the x-ray flux from a laser-irradiated hohlraum. The resulting radiation wave propagates axially through the optically thick foam and is measured via time-resolved x-ray imaging as it breaks out the far end. The data show that the radiation wave breaks out at the center prior to breaking out at the edges, indicating a significant curvature in the radiation front. This curvature is primarily due to energy loss into the walls surrounding the foam.

引用

页码：274 / 277

页数：4

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