Effects of cathode operating parameters on the ignition voltage threshold of Hall thrusters Li, Wen-Bo ; Li, Hong ; Ding, Yong-Jie ; Wei, Li-Qiu ; Yang, Xin-Yong ; Cai, Hai-Kuo ; Sun, Jian-Ning ; Yu, Da-Ren Abstract Publication: Vacuum Pub Date: April 2020 DOI: 10.1016/j.vacuum.2020.109169 Bibcode: 2020Vacuu.174j9169L