Characteristics of plasma fluctuations at the frequencies 10–100 kHz in Hall thrusters were investigated since the fluctuations might affect not only its performance but also its lifetime. Measured fluctuation characteristics varied with magnetic flux density of the applied field and they were categorized into the four regimes. Since the electron mobility strongly depends on applied field strength, it was thought that electrons would play an important role on this oscillation. Therefore, the oscillation model derived from ionization instability considering electron mobility was proposed. The predicted stable/unstable operating condition map agreed well with the measured one.
雑誌名
Vacuum
巻
65
号
3-4
ページ
375 - 381
発行年
2002-05
ISSN
0042207X
書誌レコードID
AA00879589
DOI
info:doi/10.1016/S0042-207X(01)00445-6
権利
This is the author's version of a work accepted for publication by Elsevier. Changes resulting from the publishing process, including peer review, editing, corrections, structural formatting and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Vacuum 65, 2002, 10.1016/S0042-207X(01)00445-6.
Discharge Plasma Fluctuations in Hall Thrusters
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