Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9614033b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Aug. 1, 1991, p. 14,033-14,049. Research supported by U.S. Navy.
Physics
73
Geomagnetic Tail, Particle Trajectories, Space Plasmas, Distribution Functions, Maxwell-Boltzmann Density Function, Stochastic Processes
Scientific paper
The process of 'differential memory' in the earth's magnetotail is studied in the framework of the modified Harris magnetotail geometry. It is verified that differential memory can generate non-Maxwellian features in the modified Harris field model. The time scales and the potentially observable distribution functions associated with the process of differential memory are investigated, and it is shown that non-Maxwelllian distributions can evolve as a test particle response to distribution function boundary conditions in a Harris field magnetotail model. The non-Maxwellian features which arise from distribution function mapping have definite time scales associated with them, which are generally shorter than the earthward convection time scale but longer than the typical Alfven crossing time.
Burkhart Grant R.
Chen Jiahua
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