Double-ejection micro-cathode arc thruster applied to micro-satellite  

作　　者：Jia Tian Wenzheng Liu Anton Nikiforov Nathalie De Geyter Rino Morent 

机构地区：[1]School of Electrical Engineering,Beijing Jiaotong University,Beijing,China [2]Research Unit Plasma Technology(RUPT),Department of Applied Physics,Ghent University,Ghent,Belgium

出　　处：《High Voltage》2023年第1期102-110,共9页高电压（英文）

基　　金：China Scholarship Council,Grant/Award Number:202007090144;National Natural Science Foundation of China,Grant/Award Number:51577011;Fundamental Research Funds for the Central Universities,Grant/Award Number:2018YJS162。

摘　　要：An innovative double-ejection micro-cathode arc thruster(AC_(d-μ)CAT),which consists of a cylindrical inner anode,a cylindrical outer cathode and two insulating sleeves(an inner insulating sleeve and an outer insulating sleeve),was proposed.The differences in electrical characteristics,plasma parameters and propulsion performance between the newly proposed AC_(d-μ)CAT and a traditionalμCAT were examined.Study results showed that compared to the traditionalμCAT structure,by using the AC_(d-μ)CAT,the peak value of produced thrust was increased 9.3 times,while the amplitude of the ion current and the ion-to-arc ratio were increased 5.4 and 5.9 times(from 1.2%to 7.1%),respectively.In addition,data from Langmuir probe experiments indicated that peak values of the directional propagation speed and density of plasma plume were increased 3.1 times and 4.2 times,respectively.Moreover,plasma plume directional ejection performance was also significantly improved.This study result will provide support for the development of a new-generationμCAT.

关 键 词：CYLINDRICAL INNER outer 

分 类 号：O53[理学—等离子体物理]