A saturation mechanism for the Farley-Buneman instability

Details A saturation mechanism for the Farley-Buneman instability A saturation mechanism for the Farley-Buneman instability

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.1833o&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 11, p. 1833-1836

Physics

Plasma Physics

15

Ionosphere: Plasma Waves And Instabilities, Space Plasma Physics: Numerical Simulation Studies, Ionosphere: Ionospheric Irregularities, Space Plasma Physics: Wave/Particle Interactions

Scientific paper

Studies with a reduced-mode two-fluid model have revealed a promising candidate for the saturation mechanism of the Farley-Buneman instability in the daytime equatorial electrojet. The mechanism operates by redistributing the zero-order electron E×B flow field. Secondary waves generated nonlinearly by the instability are responsible for the flow field modification. Saturation occurs because the modified flow reduces the principal charge transport responsible for the growth of the primary wave. Two-dimensional particle simulations of the instability exhibit saturation via the same mechanism.

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