Variable operation of Hall thruster with multiple segmented electrodes

Fisch, N.J. ; Raitses, Y. ; Dorf, L.A. ; Litvak, A.A.

Princeton University. Plasma Physics Laboratory.

关键词: Propulsion Systems;    Electrodes;    Plasma Jets;    33 Advanced Propulsion Systems;    Hall Effect;   

DOI  :  10.2172/751019
RP-ID  :  PPPL--3432
RP-ID  :  AC02-76CH03073
RP-ID  :  751019

美国|英语

来源: UNT Digital Library

【 摘 要 】

Variable plasma jet velocity with low beam divergence over a range of mass flow rates can be achieved through segmented electrode operation of Hall plasma accelerator. With the use of just a cathode side electrode at the cathode potential, the beam divergence can be decreased substantially, at some cost in efficiency. However, the additional use of an anode side electrode retains the same reduced plume divergence, but at efficiencies comparable to the non-segmented operation. The high efficiency persists also when the anode side electrode is biased at an intermediate potential, thus producing two-stage Hall accelerator operation.