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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 21, issue 1
Nonlin. Processes Geophys., 21, 61–85, 2014
https://doi.org/10.5194/npg-21-61-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Nonlinear waves and chaos in space plasmas

Nonlin. Processes Geophys., 21, 61–85, 2014
https://doi.org/10.5194/npg-21-61-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 10 Jan 2014

Research article | 10 Jan 2014

Stochastic electron motion driven by space plasma waves

G. V. Khazanov1, A. A. Tel’nikhin2, and T. K. Kronberg2 G. V. Khazanov et al.
  • 1NASA Goddard Space FlightCenter, Greenbelt, MD, USA
  • 2Altai State University, Department of Physics and Technology, Barnaul, Russia

Abstract. Stochastic motion of relativistic electrons under conditions of the nonlinear resonance interaction of particles with space plasma waves is studied. Particular attention is given to the problem of the stability and variability of the Earth's radiation belts. It is found that the interaction between whistler-mode waves and radiation-belt electrons is likely to involve the same mechanism that is responsible for the dynamical balance between the accelerating process and relativistic electron precipitation events. We have also considered the efficiency of the mechanism of stochastic surfing acceleration of cosmic electrons at the supernova remnant shock front, and the accelerating process driven by a Langmuir wave packet in producing cosmic ray electrons. The dynamics of cosmic electrons is formulated in terms of a dissipative map involving the effect of synchrotron emission. We present analytical and numerical methods for studying Hamiltonian chaos and dissipative strange attractors, and for determining the heating extent and energy spectra.

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