Unsteady motion of laser ablation plume by vortex induced by the expansion of curved shock wave

被引：2

作者：

Tran, D. T. ^{[1
]}

Mori, K. ^{[1
]}

机构：

[1] Nagoya Univ, Dept Aerosp Engn, Chikusa Ku, 1 Furo Cho, Nagoya, Aichi 4648603, Japan

来源：

SELECTED PAPERS FROM THE 31ST INTERNATIONAL CONGRESS ON HIGH-SPEED IMAGING AND PHOTONICS | 2017年 / 10328卷

关键词：

unsteady motion; laser ablation; spherical shockwave; high-speed video camera;

D O I：

10.1117/12.2270749

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

There are a number of industrial applications of laser ablation in a gas atmosphere. When an intense pulsed laser beam is irradiated on a solid surface in the gas atmosphere, the surface material is ablated and expands into the atmosphere. At the same time, a spherical shock wave is launched by the ablation jet to induce the unsteady flow around the target surface. The ablated materials, luminously working as tracer, exhibit strange unsteady motions depending on the experimental conditions. By using a high-speed video camera (HPV-X2), unsteady motion ablated materials are visualized at the frame rate more than 106 fps, and qualitatively characterized.

引用

页数：5