StudyonInfluenceofHydrogenPartialPressure onHallThrusterPlasmaFocusingCharacteristics inGroundVacuumSystem
DING Yong-jie 1,HU Yan-lin 2,NING Zhong-xi 1,YAN Shi-lin 1,LI Jie 1
Journal of Propulsion Technology . 2015, (4): 635 -640 .