EDI electron time-of-flight measurements on Equator-S

EDI electron time-of-flight measurements on Equator-S

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We princess jasmine silhouette 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 dl0211 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.Key words.Magnetospheric physics (electric fields; plasma convection; instruments and techniques).