The Rayleigh-Taylor instability in dusty plasmas

Details The Rayleigh-Taylor instability in dusty plasmas The Rayleigh-Taylor instability in dusty plasmas

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..469d&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 6, p. 469-474

Mathematics

27

Analysis (Mathematics), Dust, Magnetohydrodynamic Stability, Plasma Waves, Plasma-Particle Interactions, Charged Particles, Electron Energy, Ion Temperature, Magnetic Fields

Scientific paper

The Rayleigh-Taylor instability in dusty plasmas is analyzed. The presence of negatively charged dust substantially reduces the range of unstable wave-numbers, while the opposite is true for positively charged dust. The charge on the dust grains is assumed to remain constant throughout wave growth. It is shown, on the basis of recent work by Havnes et al. (1992) and Melandso et al. (1993), that this assumption is valid only for wave frequencies much smaller (or much larger) than the charging frequency of the dust grains.

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