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Mikrowellenabsorption in der Nähe der 2. Harmonischen der Elektronenzyklotronfrequenz

Microwave power absorption near the second harmonic of the electron cyclotron resonance

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Zeitschrift für Physik

Abstract

In plasmas produced by microwave power the electron density displays a dependence on the magnetic field strength obviously asymmetric with respect to the harmonics of the electron cyclotron frequency. In regions of the magnetic field strength just above the harmonics there are extremely high values of electron density, the density values dropping sharply off towards the other wing of the harmonics.

Absorption experiments near the second harmonic at low microwave power — the plasma being produced by different means — reveal a resonant absorption structure in the magnetic field region above the harmonic. This can be attributed to excitation of geometrical eigenmodes of electrostatic. waves propagating perpendicular to the magnetic field (Bernstein waves).

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Literatur

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Authors and Affiliations

  1. Institut für Experimentalphysik II der Ruhr-Universität Bochum, Deutschland

    H. Beerwald, G. Böhm & M. Krämer

Authors
  1. H. Beerwald
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  2. G. Böhm
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  3. M. Krämer
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Additional information

Diese Untersuchungen wurden im Rahmen des Sonderforschungsbereiches „Plasmaphysik Bochum/Jülich“ durchgeführt. Besonderer Dank der Autoren gilt Herrn Prof. Dr. H. Schlüter für die Unterstützung dieser Arbeit und für viele klärende Diskussionen. Sie danken außerdem Herrn D. Pflüger für die technische Unterstützung bei Aufbau und Durchführung der Versuche.

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Beerwald, H., Böhm, G. & Krämer, M. Mikrowellenabsorption in der Nähe der 2. Harmonischen der Elektronenzyklotronfrequenz. Z. Physik 268, 165–170 (1974). https://doi.org/10.1007/BF01669874

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  • DOI: https://doi.org/10.1007/BF01669874

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