Experimental Research on Plasma Induced by TEA CO_2 Laser Propulsion  

作　　者：卢宏 程祖海 左都罗 翟冰洁 余亮英 朱海红 

机构地区：[1]Division of Laser Science and Technology, Wuhan National Laboratory for Optoelectronics-Institution of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Plasma Science and Technology》2008年第2期203-206,共4页等离子体科学和技术（英文版）

基　　金：National Key Basic Research Special Foundation of China

摘　　要：Results in the air-breathing propulsion experiments with a parabolic light craft and a self-made UV-preionized 100 J TEA CO2 laser device are presented. Air disturbance and the spectrum of the plasma after the interaction of pulsed laser radiation with the light craft were studied. It was found that the focal length of the parabolic light craft had a significant effect on the air-disturbance. Two shock waves were detected for the longer focal length, while only one shock wave detected for the short focal length. The spectrum of the laser-induced plasma, the distribution of the characteristic lines, and the temporal behaviors of the air plasma were studied in detail. The results showed that, the evolution of the laser-induced plasma lasted 20μs, and the plasma spectrum would reach the maximum intensity at 7μs.Results in the air-breathing propulsion experiments with a parabolic light craft and a self-made UV-preionized 100 J TEA CO2 laser device are presented. Air disturbance and the spectrum of the plasma after the interaction of pulsed laser radiation with the light craft were studied. It was found that the focal length of the parabolic light craft had a significant effect on the air-disturbance. Two shock waves were detected for the longer focal length, while only one shock wave detected for the short focal length. The spectrum of the laser-induced plasma, the distribution of the characteristic lines, and the temporal behaviors of the air plasma were studied in detail. The results showed that, the evolution of the laser-induced plasma lasted 20μs, and the plasma spectrum would reach the maximum intensity at 7μs.

关 键 词：laser propulsion TEA CO2 laser-induced plasma air distribution 

分 类 号：TN241[电子电信—物理电子学]