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Transitions between drift waves in a magnetized cylindrical plasma: experiments and fluid model, solved with a spectral method

  • Etienne Gravier
  • Emmanuel Plaut
  • Xavier Caron
  • Mathieu Jenny
Regular Article

Abstract

A bifurcation scenario between collisional drift waves with different azimuthal wavenumbers m in a magnetized plasma column is experimentally studied, and compared with a linear two-fluid model solved with a new spectral method. The control parameter is the potential of an internal metallic tube in the experiments, the electron drift along the axis of the cylinder in the model. By increasing this parameter, we find bifurcations from azimuthal modes m = 5 to m = 1. The linear properties of the model agree well with the experimental observations.

Keywords

Plasma Physics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Etienne Gravier
    • 1
  • Emmanuel Plaut
    • 2
  • Xavier Caron
    • 1
  • Mathieu Jenny
    • 2
  1. 1.Institut Jean Lamour, UMR 7198 CNRS, Université de LorraineVandœuvre-lès-Nancy CedexFrance
  2. 2.LEMTA, UMR 7563 CNRS, Université de LorraineVandœuvre-lès-Nancy CedexFrance

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