Discussion on Rayleigh equation obtained for a Hall thruster plasma with dust

The present study focuses on the Rayleigh equation derived in the case of a Hall thruster plasma having dust contamination, produced near the exit of the channel due to the finite divergence of the accelerated ions and the sputtering of the walls. In the presence of negatively charged dust particles...

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Bibliographic Details
Published in:Journal of theoretical and applied physics 2018-09, Vol.12 (3), p.227-233
Main Authors: Tyagi, Jasvendra, Sharma, Dimple, Malik, Hitendra K.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Charge density
Charged particles
Condensed Matter Physics
Divergence
Dust
Electron energy
Fluid dynamics
Ion density (concentration)
Medical and Radiation Physics
Molecular
Nanoscale Science and Technology
Optical and Plasma Physics
Physics
Physics and Astronomy
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Summary:The present study focuses on the Rayleigh equation derived in the case of a Hall thruster plasma having dust contamination, produced near the exit of the channel due to the finite divergence of the accelerated ions and the sputtering of the walls. In the presence of negatively charged dust particles, a modified form of the well-known Rayleigh equation of fluid dynamics is realized. The modified equation takes the form of the Rayleigh equation for a particular band of oscillation frequency, revealing that the Rayleigh instability shall occur in the thruster only for the oscillations having frequencies within this band. For better understanding, the variation of frequency band with various parameters, viz. dust density, dust charge number, dust mass, electron temperature and ion density, has been traced out.
ISSN:2251-7227
2251-7235
DOI:10.1007/s40094-018-0300-5