Determination of the Hall Thruster Operating Regimes

Dorf, L. ; Semenov, V. ; Raitses, Y. ; Fisch, N.J.

Princeton University. Plasma Physics Laboratory.

关键词: Flow Rate;    Magnetic Fields;    Anodes;    70 Plasma Physics And Fusion Technology;    Electron Mobility;   

DOI  :  10.2172/796225
RP-ID  :  PPPL-3686.pdf
RP-ID  :  AC02-76CH03073
RP-ID  :  796225

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来源: UNT Digital Library

【 摘 要 】

A quasi one-dimensional (1-D) steady-state model of the Hall thruster is presented. For the same discharge voltage two operating regimes are possible -- with and without the anode sheath. For given mass flow rate, magnetic field profile and discharge voltage a unique solution can be constructed, assuming that the thruster operates in one of the regimes. However, we show that for a given temperature profile the applied discharge voltage uniquely determines the operating regime: for discharge voltages greater than a certain value, the sheath disappears. That result is obtained over a wide range of incoming neutral velocities, channel lengths and widths, and cathode plane locations. It is also shown that a good correlation between the quasi 1-D model and experimental results can be achieved by selecting an appropriate electron mobility and temperature profile.