Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region

Details Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....99.2191o&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. A2, p. 2191-2203

Physics

16

Electric Fields, Ion Distribution, Liouville Theorem, Magnetic Field Configurations, Magnetically Trapped Particles, Plasmapause, Collisionless Plasmas, Magnetic Equator, Plasma Control, Plasma Density, Plasma Temperature

Scientific paper

The presence of anisotropic plasma distributions, trapped at the Earth's magnetic equator, has consequences for the electric field structure which must exist in equilibrium along the magnetic field line. Data from SCATHA and Dynamics Explorer 1 indicate that the core ion distributions at the magnetic equator can be well described as bi-Maxwellian distributions, with a perpendicular temperature an order of magnitude larger than the parallel temperature. A collisionless model is developed for the variation in plasma parameters, following the forms developed by Whipple (1977). If the core electron anisotropy is low, the resulting electric field of approximately 0.1 microV/m is pointed away from the equator. Under these conditions the self-consistent electric field will not overcome the effects of magnetic trapping. The resulting potential distribution results in a local maximum in total plasma density at the equator. Only when the electron distribution is primarily field-aligned can there be a density minimum at the equator. Comparisons are made between this model and the observed variations in DE 1 plasma parameters with latitude.

Affiliated with

Also associated with

No associations

Rating

Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region 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 Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison between Liouville's theorem and observed latitudinal distributions of trapped ions in the plasmapause region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1017026