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 abtained in nozzle plume.

• 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。