Effects of Segmented Electrode in Hall Current Plasma Thrusters

Raitses, Y. ; Keidar, M. ; Staack, D. ; Fisch, N.J.

Princeton University. Plasma Physics Laboratory.

关键词: 30 Direct Energy Conversion;    Hydrodynamic Model;    Magnetic Fields;    Electrodes;    70 Plasma Physics And Fusion Technology;   

DOI  :  10.2172/792847
RP-ID  :  PPPL-3634
RP-ID  :  AC02-76CH03073
RP-ID  :  792847

美国|英语

来源: UNT Digital Library

【 摘 要 】

Segmented electrodes with a low secondary electron emission are shown to alter significantly plasma flow in the ceramic channel of the Hall thruster. The location of the axial acceleration region relative to the magnetic field can be moved. The radial potential distribution can also be altered near the channel walls. A hydrodynamic model shows that these effects are consistent with a lower secondary electron emission of the segmented electrode as compared to ceramic channel walls.