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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 6, issue 3/4
Nonlin. Processes Geophys., 6, 129-143, 1999
https://doi.org/10.5194/npg-6-129-1999
© Author(s) 1999. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Nonlinear Waves and Chaos

Nonlin. Processes Geophys., 6, 129-143, 1999
https://doi.org/10.5194/npg-6-129-1999
© Author(s) 1999. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  31 Dec 1999

31 Dec 1999

Chaos in Magnetoplasmas

B. Buti B. Buti
  • Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA

Abstract. A nonlinear wave, in general, is equivalent to a nonlinear dynamical system, which exhibits the phenomena of chaos. By means of techniques of nonlinear dynamical systems, we have investigated the conditions under which nonlinear Alfvén waves and lower-hybrid waves can become chaotic. The role of heavy ions, in controlling the chaos in magnetoplasmas, is examined. Chaotic routes to Alfvénic turbulence, with k-1 spectra, are observed in case of externally driven nonlinear Alfvén waves. Anomalous heating and particle acceleration resulting from chaotic fields, generated by lower-hybrid waves, are briefly outlined.

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