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| Titel |
Modeling of the Farley-Buneman instability in the E-region ionosphere: a new hybrid approach |
| VerfasserIn |
D. V. Kovalev, A. P. Smirnov, Y. S. Dimant |
| 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 ; 26, no. 9 ; Nr. 26, no. 9 (2008-09-23), S.2853-2870 |
| Datensatznummer |
250016233
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| Publikation (Nr.) |
 copernicus.org/angeo-26-2853-2008.pdf |
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| Zusammenfassung |
| A novel approach to nonlinear simulations of the Farley-Buneman
(FB) instability in the E-region ionosphere is developed. The
mathematical model includes a fluid description of electrons
and a simplified kinetic description of ions based on a kinetic
equation with the Bhatnagar-Gross-Crook (BGK) collision term.
This hybrid model takes into account all major factors crucial
for development and nonlinear stabilization of the instability
(collisional drag forces, ion inertia and Landau damping,
dominant electron nonlinearity, etc.). At the same time, these
simulations are free of noises caused by the finite number of
particles and may require less computer resources than
particle-in-cell (PIC) or hybrid – semi-fluid semi-PIC
– simulations. First results of 2-D simulations are presented which
agree reasonably well with those of previous 2-D PIC
simulations. One of the potentially useful applications of the
novel computational approach is modeling of the FB instability
not far from its threshold. |
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