Kinetic simulation of plasma flows in the inner magnetosphere
| Autor: | Ronald H. Miller, Dan Winske, C. E. Rasmussen, Tamas I. Gombosi, Georgi V. Khazanov |
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| Rok vydání: | 1993 |
| Předmět: |
Convection
Physics Atmospheric Science Ecology Flux tube Paleontology Soil Science Flux Magnetosphere Forestry Plasmasphere Mechanics Plasma Geophysics Aquatic Science Oceanography Momentum Space and Planetary Science Geochemistry and Petrology Physics::Space Physics Thermal Earth and Planetary Sciences (miscellaneous) Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research: Space Physics. 98:19301-19313 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/93ja01292 |
| Popis: | A one-dimensional hybrid particle code is used to study the interactions between upflowing thermal ions from conjugate ionospheres. The simulation model allows for multiple species, convection of plasmaspheric flux tubes, and Coulomb self-collisions which conserve momentum and energy locally. The model incorporates a variable-flux boundary condition where the flux, at the boundaries, approaches zero as the plasmasphere fills and equilibrium conditions are reached. The effects of two important processes on plasmaspheric refilling have been considered. The first includes convection of the plasmaspheric flux tube. The second is the interaction of ionospheric thermal plasma and particle injection from an external source. Particle injection seems to play an important role in the evolution of the total particle distribution on the early timescales (t less than 1 hour); however, for late timescales (t larger than 8 days) the thermal plasma from the ionosphere dominates the particle distribution. |
| Databáze: | OpenAIRE |
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