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

Journal Article · Sat Feb 07 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4906975· OSTI ID:22413033

Liqiu, Wei; Liang, Han; Ziyi, Yang; Jing, Li; Yong, Cao; Daren, Yu ^[1]; Jianhua, Du ^[2]

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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)

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.

• OSTI ID: 22413033
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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