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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 24, issue 10
Ann. Geophys., 24, 2435–2439, 2006
https://doi.org/10.5194/angeo-24-2435-2006
© Author(s) 2006. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 24, 2435–2439, 2006
https://doi.org/10.5194/angeo-24-2435-2006
© Author(s) 2006. This work is distributed under
the Creative Commons Attribution 3.0 License.

  20 Oct 2006

20 Oct 2006

Eigenmode stability analysis of drift-mirror modes in nonuniform plasmas

D. Yu. Klimushkin1 and L. Chen2,3 D. Yu. Klimushkin and L. Chen
  • 1Institute of Solar-Terrestrial Physics, Russian Academy of Sciences, Irkutsk, P.O. Box 4026, 664033, Russia
  • 2Department of Physics and Astronomy, University of California Irvine, Irvine, CA 92697-4575, USA
  • 3Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China

Abstract. Drift-mirror modes in a one-dimensional inhomogeneous model of the magnetosphere are studied by employing gyrokinetics, taking into account finite Larmor radius effects. A wave equation is derived which describes both the spatial structure of the modes, and its eigenvalue yields a growth rate of the mode. The finite Larmor radius effects are shown to raise the instability threshold especially for high-m waves, and lead to wave propagation across field lines.

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