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| Titel |
Return-current formation in the electron beam – plasma system |
| VerfasserIn |
M. Karlický, M. Bárta |
| 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 ; 16, no. 4 ; Nr. 16, no. 4 (2009-07-23), S.525-532 |
| Datensatznummer |
250013232
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| Publikation (Nr.) |
 copernicus.org/npg-16-525-2009.pdf |
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| Zusammenfassung |
| Using a 3-D electromagnetic particle-in-cell model an evolution
of the electron distribution function in the beam-plasma system with
the return current is computed. It was found that the resulting
electron distribution function depends on the magnetic field assumed along
the beam-propagation direction.
While for small magnetic fields the electron distribution function
becomes broad in the direction perpendicular to the beam propagation
due to the Weibel (filamentation) instability and
the return current is formed by a shifted bulk
distribution, for stronger magnetic fields the
distribution, especially on the return current side,
is extended in the beam-propagation direction. To understand better
the instabilities influencing the mentioned processes,
the dispersion diagrams are computed and discussed. |
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