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| Titel |
The Electron Drift Instrument on Cluster: overview of first results |
| VerfasserIn |
G. Paschmann, J. M. Quinn, R. B. Torbert, H. Vaith, C. E. McIlwain, G. Haerendel, O. H. Bauer, T. Bauer, W. Baumjohann, W. Fillius, M. Forster, S. Frey, E. Georgescu, S. S. Kerr, C. A. Kletzing, H. Matsui, P. Puhl-Quinn, E. C. Whipple |
| 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 ; 19, no. 10/12 ; Nr. 19, no. 10/12, S.1273-1288 |
| Datensatznummer |
250014116
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| Publikation (Nr.) |
 copernicus.org/angeo-19-1273-2001.pdf |
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| Zusammenfassung |
EDI measures the drift
velocity of artificially injected electron beams. From this drift velocity, the
perpendicular electric field and the local magnetic field gradients can be
deduced when employing different electron energies. The technique requires the
injection of two electron beams at right angles to the magnetic field and the
search for those directions within the plane that return the beams to their
associated detectors after one or more gyrations. The drift velocity is then
derived from the directions of the two beams and/or from the difference in
their times-of-flight, measured via amplitude-modulation and coding of the
emitted electron beams and correlation with the signal from the returning
electrons. After careful adjustment of the control parameters, the beam
recognition algorithms, and the onboard magnetometer calibrations during the
commissioning phase, EDI is providing excellent data over a wide range of
conditions. In this paper, we present first results in a variety of regions
ranging from the polar cap, across the magnetopause, and well into the
magnetosheath.
Key words. Electron drift velocity
(electric fields; plasma convection; instruments and techniques) |
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