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

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

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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 ellakai 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 elbeco adu ripstop pants 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).