Computer Science
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979esasp.148..295r&link_type=abstract
In ESA Magnetospheric Boundary Layers p 295-309 (SEE N80-13529 04-42)
Computer Science
Boundary Layer Plasmas, Magnetohydrodynamic Stability, Microstructure, Plasma Interactions, Collisionless Plasmas, Field Aligned Currents, Hydrogen Plasma, Kinetic Theory, Magnetopause, Maxwell Equation, Step Functions, Vlasov Equations
Scientific paper
A model of steady state tangential discontinuities is developed using the kinetic theory of multicomponents collisionless plasmas. The magnetopause layer and the inner edge of the plasma boundary layer are considered as regions where two different hydrogen plasmas are interpenetrated and the model is used to describe their microstructures. Large field-aligned currents are generated at the magnetopause and may constitute a part of the field-aligned currents observed in the cusps. A stability study shows that the electron layers are nearly always unstable. The thickness of stable ion layers increases with increasing values of the temperature ratio (T+/T-) and/or with decreasing density variations. This thickness represents also 2.5 ion gyroradii when (T+/T-) becomes larger than 5. A minimum magnetopause thickness is found equal to 100 km.
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