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Weak magnetohydrodynamic turbulence of a magnetized plasma

  • Plasma, Gases
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Abstract

A weak turbulence of the magnetohydrodynamic waves in a strongly magnetized plasma was studied in the case when the plasma pressure is small as compared to the magnetic field pressure. In this case, the principal nonlinear mechanism is the resonance scattering of fast magnetoacoustic and Alfvén waves on slow magnetoacoustic waves. Since the former waves are high-frequency (HF) with respect to the latter, the total number of HF waves in the system is conserved (adiabatic invariant). In the weak turbulence regime, this integral of motion generates a Kolmogorov spectrum with a constant flux of the number of HF waves toward the longwave region. The shortwave region features a Kolmogorov spectrum with a constant energy flux. An exact angular dependence of the turbulence spectra is determined for the wave propagation angles close to the average magnetic field direction.

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  1. Landau Institute of Theoretical Physics, Russian Academy of Sciences, Moscow, 117334, Russia

    E. A. Kuznetsov

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__________

Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 120, No. 4, 2001, pp. 1213–1226.

Original Russian Text Copyright © 2001 by Kuznetsov.

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Kuznetsov, E.A. Weak magnetohydrodynamic turbulence of a magnetized plasma. J. Exp. Theor. Phys. 93, 1052–1064 (2001). https://doi.org/10.1134/1.1427116

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  • DOI: https://doi.org/10.1134/1.1427116

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