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Effect of Anode Dielectric Coating on Hall Thruster Operation.

DE2004820110

Publication Date	2003
Personal Author	Dorft, L.; Raitses, Y.; Fisch, N. J.; Semenov, V.
Page Count	20
Abstract	An interesting phenomenon observed in the near-anode region of a Hall thruster is that the anode fall changes from positive to negative upon removal of the dielectric coating, which is produced on the anode surface during the normal course of Hall thruster operation. The anode fall might affect the thruster lifetime and acceleration efficiency. The effect of the anode coating on the anode fall is studied experimentally using both biased and emissive probes. Measurements of discharge current oscillations indicate that thruster operation is more stable with the coated anode.
Keywords	Hall thruster Anodes Dialectics Anodic coatings Protective treatment Thrusters Coatings Probes Measurements Stability Oscillations Dialectic coating Biased probes Emissive probes
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Princeton Univ., NJ. Plasma Physics Lab.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200414

Effect of Anode Dielectric Coating on Hall Thruster Operation.

Effect of Anode Dielectric Coating on Hall Thruster Operation.
DE2004820110

Publication Date	2003
Personal Author	Dorft, L.; Raitses, Y.; Fisch, N. J.; Semenov, V.
Page Count	20
Abstract	An interesting phenomenon observed in the near-anode region of a Hall thruster is that the anode fall changes from positive to negative upon removal of the dielectric coating, which is produced on the anode surface during the normal course of Hall thruster operation. The anode fall might affect the thruster lifetime and acceleration efficiency. The effect of the anode coating on the anode fall is studied experimentally using both biased and emissive probes. Measurements of discharge current oscillations indicate that thruster operation is more stable with the coated anode.
Keywords	Hall thruster Anodes Dialectics Anodic coatings Protective treatment Thrusters Coatings Probes Measurements Stability Oscillations Dialectic coating Biased probes Emissive probes
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Princeton Univ., NJ. Plasma Physics Lab.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200414