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Title:
Plasma oscillations in Hall thrusters
Authors:
Choueiri, E. Y.
Affiliation:
Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, New Jersey 08540
Publication:
Physics of Plasmas, Volume 8, Issue 4, pp. 1411-1426 (2001). (PhPl Homepage)
Publication Date:
04/2001
Origin:
AIP
PACS Keywords:
Ion and plasma propulsion, Microinstabilities
Abstract Copyright:
(c) 2001: American Institute of Physics.
DOI:
10.1063/1.1354644
Bibliographic Code:
2001PhPl....8.1411C

Abstract

The nature of oscillations in the 1 kHz-60 MHz frequency range that have been observed during operation of Hall thrusters is quantitatively discussed. Contours of various plasma parameters measured inside the accelerating channel of a typical Hall thruster are used to evaluate the various stability criteria and dispersion relations of oscillations that are suspected to occur. A band by band up-to-date overview of the oscillations is carried out with a description of their observed behavior and a discussion of their nature and dependencies through comparison of the calculated contours to reported observations. The discussion encompasses the excitation of low frequency azimuthal drift waves that can form a rotating spoke, axially propagating ``transit-time'' oscillations, azimuthal drift waves, ionization instability-type waves, and wave emission peculiar to weakly ionized inhomogeneous plasmas in crossed electric and magnetic fields.
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Database: Astronomy
Physics
arXiv e-prints