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Title: Modulating action of low frequency oscillations on high frequency instabilities in Hall thrusters

It is found that the low frequency oscillations have modulating action on high frequency instabilities in Hall thrusters. The physical mechanism of this modulation is discussed and verified by numerical simulations. Theoretical analyses indicate that the wide-range fluctuations of plasma density and electric field associated with the low frequency oscillations affect the electron drift velocity and anomalous electron transport across the magnetic field. The amplitude and frequency of high frequency oscillations are modulated by low frequency oscillations, which show the periodic variation in the time scale of low frequency oscillations.
Authors:
; ; ; ; ;  [1] ;  [2]
  1. Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001 (China)
  2. Beijing Institute of Control Engineering, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22413033
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; COMPUTERIZED SIMULATION; ELECTRIC FIELDS; ELECTRON DRIFT; ELECTRONS; FLUCTUATIONS; HALL EFFECT; MAGNETIC FIELDS; MODULATION; OSCILLATIONS; PERIODICITY; PLASMA DENSITY; THRUSTERS; VELOCITY