Physics
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87..651w&link_type=abstract
Journal of Geophysical Research, vol. 87, Feb. 1, 1982, p. 651-660.
Physics
5
Geomagnetism, Ion Currents, Magnetically Trapped Particles, Magnetopause, Daytime, Ion Temperature, Kinetic Energy, Lines Of Force, Night Sky, Particle Trajectories
Scientific paper
The current contributed by ions trapped in the vicinity of a magnetic X line is calculated. The three dimensional configuration of the neutral region is found to be critical in determining the current in that the escape mechanism and trapping times depend on the three-dimensional aspects. A trapping criterion is defined. In the neutral region the ions can gain substantial kinetic energy, and the current will change the X line configuration in such a way that there will be a positive feedback effect, rapidly forming an extended magnetopauselike structure for even very small incident plasma densities.
Silevitch Michael B.
Whipple Elden C.
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