The Electron Drift Instrument on Cluster: overview of first results

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. Förster; S. Frey; E. Georgescu; S. S. Kerr; C. A. Kletzing; H. Matsui; P. Puhl-Quinn; E. C. Whipple

doi:10.5194/angeo-19-1273-2001

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The Electron Drift Instrument on Cluster: overview of first results

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The Electron Drift Instrument on Cluster: overview of first results

G. Paschmann, J. M. Quinn, R. B. Torbert, H. Vaith, C. E. Mcilwain, G. Haerendel, O. H. Bauer, T. Bauer, W. Baumjohann, W. Fillius, …

Annales geophysicae (1988), Vol.19(10/12), pp.1273-1288

2001

DOI: 10.5194/angeo-19-1273-2001

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Abstract

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.

Earth Sciences

Ocean, Atmosphere

Sciences of the Universe

Details

Title: Subtitle: The Electron Drift Instrument on Cluster: overview of first results
Creators: G. Paschmann - Max Planck Institute for Extraterrestrial Physics
J. M. Quinn - University of New Hampshire
R. B. Torbert - University of New Hampshire
H. Vaith - Max Planck Institute for Extraterrestrial Physics
C. E. Mcilwain - University of California San Diego
G. Haerendel - Constructor University
O. H. Bauer - Max Planck Institute for Extraterrestrial Physics
T. Bauer - Max Planck Institute for Extraterrestrial Physics
W. Baumjohann - Space Research Institute
W. Fillius - University of California San Diego
M. Förster - Max Planck Institute for Extraterrestrial Physics
S. Frey - Max Planck Institute for Extraterrestrial Physics
E. Georgescu - Max Planck Institute for Extraterrestrial Physics
S. S. Kerr - University of California San Diego
C. A. Kletzing - University of Iowa
H. Matsui - University of New Hampshire
P. Puhl-Quinn - Max Planck Institute for Extraterrestrial Physics
E. C. Whipple - University of Washington
Resource Type: Journal article
Publication Details: Annales geophysicae (1988), Vol.19(10/12), pp.1273-1288
DOI: 10.5194/angeo-19-1273-2001
ISSN: 0992-7689
eISSN: 1432-0576
Publisher: European Geosciences Union
Language: English
Date published: 2001
Academic Unit: Physics and Astronomy
Record Identifier: 9984428660702771

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