摘要
基于激光推进的工作特点 ,对激光推进中激光与工质的相互作用进行了研究 .分析了激光对工质的击穿过程 ,得到了击穿阈值的计算方法 ,计算了激光对空气和氢气的击穿阈值 ;对工质中激光的逆韧致吸收过程进行了研究 ,推导了逆韧致吸收系数的计算公式 .以氢气和氩气为工质进行了算例计算 ,计算结果可对国外文献提到的试验中出现的等离子体“漂白”
Based on the characteristic of laser propulsion, an investigation was performed for the mechanism of the interaction between laser and propellant gas. The breakdown process of propellant gas was studied and the breakdown threshold values of hydrogen and air were calculated. The inverse bremsstrahlung absorption coefficient of hydrogen and argon were calculated. The results can explain the blanch phenomena and plasma instability in laser propulsion experimentation that is mentioned in some paper.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2004年第7期635-639,共5页
Journal of Beijing University of Aeronautics and Astronautics
基金
863航天领域青年基金资助项目(8632167)
