Linear theory for the collisionless drift wave instability with wavelengths near the ion gyroradius

Details Linear theory for the collisionless drift wave instability with wavelengths near the ion gyroradius Linear theory for the collisionless drift wave instability with wavelengths near the ion gyroradius

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.4365c&link_type=abstract

Journal of Geophysical Research, vol. 83, Sept. 1, 1978, p. 4365-4368.

Physics

7

Collisionless Plasmas, Ion Motion, Ionospheric Drift, Magnetohydrodynamic Stability, Plasma Density, Spread F, Ion Temperature, Linear Systems, Plasmapause, Poisson Equation, Vlasov Equations, Wave Propagation, Wavelengths

Scientific paper

General results of a collisionless theory of electrostatic drift waves, originally applied to the theory of equatorial spread, are discussed. The region of validity for a previously derived expression for the growth rate is determined, the region is then extended, and an expression for the growth rate is derived which is valid over a larger region including wavelengths much smaller than the ion gyroradius. The value for maximum growth rate is estimated. The applicability of these results for a variety of space plasmas characterized by steep gradients in plasma density is considered.

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