用Langmuir探针诊断MPT羽流  

Diagnosis of MPT plume by using langmuir probe

作　　者：林榕[1] 毛根旺[1] 唐金兰[1] 杨涓[1] 夏广庆[1] 何洪庆[1] 

机构地区：[1]西北工业大学航天学院,西安710072

出　　处：《固体火箭技术》2005年第2期149-152,共4页Journal of Solid Rocket Technology

基　　金：国家863计划支持项目(86322512);国防科工委基础研究支持项目(J1400D001)

摘　　要：为了探索微波等离子推力器(MPT)羽流的特性,建立了一套Langmuir探针诊断系统并对MPT的羽流进行了诊断,得出了MPT喷管羽流的电子温度和电子数密度等重要特性参数。实验结果表明,所测参数反映了等离子体的特性,与理论计算结果基本相符,并且诊断手段简单易行,为MPT羽流诊断提供了一种实验手段。A Langmuir probe diagnosis system was established to explore the characteristics of MPT plume in vacuum environment. Some important parameters such as electronic temperature and electron density were obtained in nozzle plume. Results of the experiment shows that the measured parameters which basically accord with theoretic calculation results can reflect the characteristics of the plume plasma. Langmuir probe is one simple method for diagnosis of plasma, and provides an experimental method for diagnosis of MPT plume.

关 键 词：微波等离子推力器(MPT) LANGMUIR探针 等离子体诊断 羽流 电子温度 

分 类 号：V439.2[航空宇航科学与技术—航空宇航推进理论与工程] O536[理学—等离子体物理]