A kinetic theory for the drift-kink instability
| Autor: | Giovanni Lapenta, J. U. Brackbill |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Atmospheric Science
Soil Science Aquatic Science Kink instability Oceanography Instability Physics::Plasma Physics Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Statistical physics Growth rate Earth-Surface Processes Water Science and Technology Physics Ecology Linear system Paleontology Forestry Mechanics Plasma Mass ratio Nonlinear system Geophysics Space and Planetary Science Physics::Space Physics Kinetic theory of gases |
| Zdroj: | Journal of Geophysical Research: Space Physics. 102:27099-27108 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/97ja02140 |
| Popis: | We have developed a linear two-dimensional kinetic theory, which is motivated by recent results for the drift-kink instability. The theory predicts plasma instability for large values of ion-electron temperature ratios, Ti/Te, moderate drift speeds, and large ion-electron mass ratios, mi/me, corresponding to conditions in the near-Earth region of the magnetotail neutral sheet. The growth rate predicted by the theory is in good agreement with nonlinear plasma simulations (but the mode structure is not), including linear growth rates obtained with an implicit, electromagnetic simulation with realistic ion-electron mass ratio. |
| Databáze: | OpenAIRE |
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