摘要
研究了激光在分子流场的瑞利散射特性,包括散射光强、谱线加宽以及频率移动与流场中分子密度、温度和速度分布的关系;研究了实现瑞利散射测量的实验方法,利用脉冲深紫外(193nm)及可见激光(532nm),结合带像增强器CCD照像机,建立了脉冲为纳秒量级的流场测量装置,拍摄了清晰的空气瑞利散射图像.
The characteristics of laser Rayleigh Scattering (RS) in molecules flows are studied,which include the intensity of scattering light,the broadening and the shift of spectra,the density of the molecules as well as the temperature and the velocity of the flow.We study the RS experimentally and a system based on UV pulsed laser (193 nm),532 nm laser and intensified CCD camera has been built up.A distinct RS image of air has been captured.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
2000年第1期21-24,共4页
Journal of Tianjin University：Science and Technology
基金
国家自然科学基金 !(1 9772 0 33)
关键词
瑞利散射
流场检测
脉冲激光
多参数测量
Rayleigh scattering
fluid diagnosis
pulse laser
multiplex parametric measurements
