%0 Journal Article
%T Laser Absorption Spectrum Technique for Gas Flow Velocity Field Measurements<br>气流流场的高分辨激光光谱法测量
%A 刘文华
%A 严海星
%J 实验力学
%D 1999
%I 
%X An optical technique for velocity measurement in gas flowfield is presented. The technique is based on the observation of Doppler shifted absorption spectrum lines from seeded idodine molecules excited at a laser frequency. Large amount of optical spectrum measurements are made for static and dynamic, unidirectional and dual directional laser excitations at different wave length. Some conclusions are drawn. The key points and difficulties of the technique are also pointed out.
%K flowfield velocity measurement
%K laser absorption spectrum<br>流场速度测量
%K 高分辨率激光光谱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=1A919CF32DD1222271D11B23C30AF4BD&yid=B914830F5B1D1078&vid=F3583C8E78166B9E&iid=0B39A22176CE99FB&sid=2DBBF45CC176713E&eid=3F0AF5EDBC960DB0&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=2