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| Titel |
The electron energy distribution during HF pumping, a picture painted with all colors |
| VerfasserIn |
B. Gustavsson, T. Sergienko, M. J. Kosch, M. T. Rietveld, B. U. E. Brändström, T. B. Leyser, B. Isham, P. Gallop, T. Aso, M. Ejiri, T. Grydeland, Å. Steen, C. LaHoz, K. Kaila, J. Jussila, H. Holma |
| 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 ; 23, no. 5 ; Nr. 23, no. 5 (2005-07-28), S.1747-1754 |
| Datensatznummer |
250015262
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| Publikation (Nr.) |
 copernicus.org/angeo-23-1747-2005.pdf |
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| Zusammenfassung |
| The shape of the electron energy distribution has long been a
central question in the field of high-frequency radio-induced
optical emission experiments. This report presents estimates of
the electron energy distribution function, fe(E), from 0 to
60 eV, based on optical multi-wavelength (6300, 5577, 8446,
4278Å) data and 930-MHz incoherent scatter radar
measurements of ion temperature, electron temperature and electron
concentration. According to our estimate, the electron energy
distribution has a depression at around 2 eV, probably caused
by electron excitation of vibrational states in N2, and a high
energy tail that is clearly supra-thermal. The temporal evolution of
the emissions indicates that the electron temperature still plays an
important role in providing electrons with energies close to
2 eV. At the higher energies the electron energy distribution has a
non-thermal tail.
Keywords. Active experiments; Ionosphere atmosphere interaction;
Ionospheric physics |
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