Shaping of the magnetotail from the mantle - Global and local structuring

Details Shaping of the magnetotail from the mantle - Global and local structuring Shaping of the magnetotail from the mantle - Global and local structuring

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.5651a&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A4, p. 5651-5676.

Physics

102

Earth Mantle, Geomagnetic Tail, Ion Distribution, Plasma Layers, Space Plasmas, Computerized Simulation, Density Distribution, Distribution Functions, Particle Acceleration

Scientific paper

Kinetic modeling of the properties of magnetotail formation from a plasma mantle source are discussed, and a unified view of the structure of the central part of the magnetotail plasma sheet as well as the structure of its boundary layer is developed. The Tsyganenko magnetic field model for quiet periods of magnetospheric activity is used to trace trajectories of mantle protons in the presence of a uniform dawn-dusk electric field. The present model shows the evolution of the global structure of the tail with a clearly defined central plasma sheet and plasma sheet boundary layer developing from its beginnings as a plasma 'nucleus' in the distant tail current sheet. This large-scale restructuring is accompanied by the creation of small-scale features in the particle distribution functions. It is also shown that complementary ring distribution structures should also exist in the central plasma sheet. The ion distribution functions in the central plasma sheet should take a rather specific form in velocity space with loss regions oriented predominantly orthogonal to the magnetic field.

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