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| Titel |
Possible evidence for partial demagnetization of electrons in the auroral E-region plasma during electron gas heating |
| VerfasserIn |
C. Haldoupis |
| 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 ; 12, no. 1 ; Nr. 12, no. 1, S.40-43 |
| Datensatznummer |
250010393
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| Publikation (Nr.) |
 copernicus.org/angeo-12-40-1994.pdf |
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| Zusammenfassung |
| A previous study, based on incoherent and
coherent radar measurements, suggested that during auroral E-region electron
heating conditions, the electron flow in the auroral electrojet undergoes a
systematic counterclockwise rotation of several degrees relative to the E×B
direction. The observational evidence is re-examined here in the light of
theoretical predictions concerning E-region electron demagnetization caused by
enhanced anomalous cross-field diffusion during strongly-driven Farley-Buneman
instability. It is shown that the observations are in good agreement with this
theory. This apparently endorses the concept of wave-induced diffusion and
anomalous electron collision frequency, and consequently electron
demagnetization, under circumstances of strong heating of the electron gas in
the auroral electrojet plasma. We recognize, however, that the evidence for
electron demagnetization presented in this report cannot be regarded as
definitive because it is based on a limited set of data. More experimental
research in this direction is thus needed. |
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