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| Titel |
Cross-field flow and electric potential in a plasma slab |
| VerfasserIn |
J. Keyser, M. Echim, M. Roth |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 8 ; Nr. 31, no. 8 (2013-08-01), S.1297-1314 |
| Datensatznummer |
250019073
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| Publikation (Nr.) |
 copernicus.org/angeo-31-1297-2013.pdf |
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| Zusammenfassung |
| We consider cross-field plasma flow inside a field-aligned plasma slab
embedded in a uniform background in a 1-dimensional geometry. This
situation may arise, for instance, when long-lasting reconnection pulses
inject plasma into the inner magnetosphere. The present paper presents a
detailed analysis of the structure of the interfaces that separate the slab
from the background plasma on either side; a fully kinetic model is used to
do so. Since the velocity shear across both interfaces has opposite signs,
and given the typical gyroradius differences between injected and background
ions and electrons, the structure of both interfaces can be very different.
The behaviour of the slab and its interfaces depends critically on the flow
of the plasma transverse to the magnetic field; in particular, it is shown
that there are bounds to the flow speed that can be supported by the
magnetised plasma. Further complicating the picture is the effect of the
potential difference between the slab and its environment. |
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