Nonlinear evolution of dust waves driven by cross-field electron currents

Details Nonlinear evolution of dust waves driven by cross-field electron currents Nonlinear evolution of dust waves driven by cross-field electron currents

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30d...6s&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 4, pp. 6-1, CiteID 1157, DOI 10.1029/2002GL016191

Physics

Plasma Physics

Ionosphere: Ionospheric Irregularities, Ionosphere: Plasma Waves And Instabilities, Radio Science: Nonlinear Phenomena, Space Plasma Physics: Nonlinear Phenomena

Scientific paper

The nonlinear evolution of dust waves generated by a low-frequency Hall current instability in a magnetized collisional dusty plasma is investigated with theory and nonlinear numerical simulations. This instability is believed to have broad applications to irregularity production in regions where dust is present in the earth's ionosphere such as noctilucent clouds and meteor trails. The instability is driven by an electron $\ \vec{E} \times \vec{B}$ current and is an analog, in the dust acoustic type wave regime, of the well-known Farley-Buneman instability. The results indicate that the instability nonlinearly saturates with dust heating and the production of secondary waves that propagate in a direction perpendicular to the primary dust acoustic type waves.

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