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| Titel |
Phase-space holes due to electron and ion beams accelerated by a current-driven potential ramp |
| VerfasserIn |
M. V. Goldman, D. L. Newman, R. E. Ergun |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 10, no. 1/2 ; Nr. 10, no. 1/2, S.37-44 |
| Datensatznummer |
250007818
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| Publikation (Nr.) |
 copernicus.org/npg-10-37-2003.pdf |
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| Zusammenfassung |
| One-dimensional
open-boundary simulations have been carried out in a current-carrying
plasma seeded with a neutral density depression and with no initial
electric field. These simulations show the development of a variety of
nonlinear localized electric field structures: double layers (unipolar
localized fields), fast electron phase-space holes (bipolar fields) moving
in the direction of electrons accelerated by the double layer and trains
of slow alternating electron and ion phase-space holes (wave-like fields)
moving in the direction of ions accelerated by the double layer. The
principal new result in this paper is to show by means of a linear
stability analysis that the slow-moving trains of electron and ion holes
are likely to be the result of saturation via trapping of a kinetic-Buneman
instability driven by the interaction of accelerated ions with
unaccelerated electrons. |
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