Low frequency drift instabilities in a dusty plasma

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871891· OSTI ID:278496

Rosenberg, M ^[1]; Krall, N A ^[2]

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1. Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093 (United States)
2. Krall Associates, Del Mar, California 92014 (United States)

Low frequency drift instabilities are investigated in a dusty magnetized plasma with negatively charged grains in which locally there is an electron density gradient which is opposite in sign to a dust density gradient. Frequencies less than the ion gyrofrequency but much larger than the dust gyrofrequency are considered. Two different equilibria are considered that are characterized by {rho}{sub {ital d}}{lt_or_gt}{ital L}{sub {ital nd}}, where {rho}{sub {ital d}} is the dust gyroradius and {ital L}{sub {ital nd}} is the dust density scale length. Instabilities analogous to the universal instability and to the lower-hybrid-drift instability (with the lower-hybrid frequency in this case associated with the dust) are investigated. Possible applications to dusty space plasmas such as the spoke regions of Saturn{close_quote}s B-ring are discussed. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 278496
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISPERSION RELATIONS
DRIFT INSTABILITY
ELECTRON DENSITY
MAGNETOPLASMA
PLANETARY RINGS
PLASMA IMPURITIES
PLASMA MICROINSTABILITIES
SATURN PLANET