Density drift instabilities and weak collisions

Details Density drift instabilities and weak collisions Density drift instabilities and weak collisions

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.2103g&link_type=abstract

Journal of Geophysical Research, vol. 88, Mar. 1, 1983, p. 2103-2111. Research sponsored by the U.S. Department of Energy;

Physics

17

Collision Parameters, Electrostatic Waves, Magnetohydrodynamic Stability, Plasma Density, Space Plasmas, Atmospheric Models, Electron Scattering, Ionic Collisions, Kinetic Theory, Rates (Per Time)

Scientific paper

A model is developed which describes the effects of weak collisions on the linear kinetic theory of electrostatic density drift instabilities. A dispersion equation valid at all frequencies and wave numbers is derived using the assumptions of a weak, uniform density gradient; a uniform magnetic field; and the BGK collision operator with a modification of the local approximation. The properties of the universal and collisional density drift instabilities at maximum growth rates are examined in detail. The thresholds of the instabilities are examined for an ionospheric model which includes ion-neutral, electron-neutral, and electron-ion collisions, and are compared with the threshold of the lower hybrid density drift instability. It is concluded that the k to the -5th short wavelength density power spectra observed above 280 km in the PLUMEX experiment are due to the effects of the universal density drift instability.

Affiliated with

Also associated with

No associations

Rating

Density drift instabilities and weak collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Density drift instabilities and weak collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Density drift instabilities and weak collisions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1467746