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The Freja wave and plasma density experiment

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Abstract

The Wave Experiment, F4, on the Swedish/German satelliteFreja, is designed to measure the electric wave fields up to 4 MHz, the magnetic wave fields up to 16 kHz and the plasma density and its relative variations up to 2 kHz. Six wave signals and four density probe signals can be measured simultaneously. The wave forms of all signals are transmitted to ground without any analysis onboard. The limited TM allocation does not allow continuous sampling of the wave signals, so normally the measurements are made in snapshots of various lengths dependent on sampling frequency, etc. Continuous sampling can be made for shorter time periods by using a 6 Mbyte memory as a buffer.

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Authors and Affiliations

  1. Uppsala Division, Swedish Institute of Space Physics, S-755 91, Uppsala, Sweden

    B. Holback, S. -E. Jansson, L. Åhlén & G. Lundgren

  2. The Norwegian Institute of Cosmical Physics, University of Oslo, Blindern, Oslo 3, Norway

    L. Lyngdal

  3. School of Electrical Engineering, Space Plasma Physics Group, Cornell University, 14853, Ithaca, NY, USA

    S. Powell

  4. Centre de recherches en Physique de l'nvironnement Terrestre et Planetaire (CRPE), 78140, Velizy, France

    A. Meyer

Authors
  1. B. Holback
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  2. S. -E. Jansson
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  3. L. Åhlén
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  4. G. Lundgren
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  5. L. Lyngdal
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  6. S. Powell
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  7. A. Meyer
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Holback, B., Jansson, S.E., Åhlén, L. et al. The Freja wave and plasma density experiment. Space Sci Rev 70, 577–592 (1994). https://doi.org/10.1007/BF00756887

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  • DOI: https://doi.org/10.1007/BF00756887

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