EDI electron time-of-flight measurements on Equator-S |
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| Authors: | G Paschmann N Sckopke H Vaith J M Quinn O H Bauer W Baumjohann W Fillius G Haerendel S S Kerr C A Kletzing K Lynch C E McIlwain R B Torbert E C Whipple |
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| Institution: | (1) Max-Planck-Institut für extraterrestrische Physik, D-87545 Garching, Germany;(2) University of New Hampshire, Durham, NH 03824, USA;(3) University of California at San Diego, La Jolla, CA 92093, USA;(4) University of Iowa, Iowa City, IA 52242, USA;(5) University of Washington, Seattle, WA 98195, USA |
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| Abstract: | We present the first electron time-of-flight measurements obtained with the Electron Drift Instrument (EDI) on Equator-S. These measurements are made possible by amplitude-modulation and coding of the emitted electron beams and correlation with the signal from the returning electrons. The purpose of the time-of-flight measurements is twofold. First, they provide the drift velocity, and thus the electric field, when the distance the electrons drift in a gyro period becomes sufficiently large. Second, they provide the gyro time of the electrons emitted by the instrument, and thus the magnitude of the ambient magnetic field, allowing in-flight calibration of the flux-gate magnetometer with high precision. Results of both applications are discussed. |
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| Keywords: | Magnetospheric physics (electric fields plasma convection instruments and techniques) |
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