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Electron Landau damping in toroidal plasma with Solov’ev equilibrium

  • Tokamaks
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Abstract

The contribution of untrapped and two groups of trapped particles to the longitudinal (with respect to the magnetic field) elements of the dielectric susceptibility is determined by solving the drift-kinetic equations for such particles in axisymmetric tokamaks with Solov’ev equilibrium. The obtained dielectric characteristics are applicable for studying linear wave processes in the frequency range of Alfvén and fast magnetosonic waves in small- and large-aspect-ratio tokamaks with circular, elliptical, and D-shaped cross sections of magnetic surfaces. The high-frequency power absorbed in plasma via electron Landau damping is estimated by summing up terms containing the imaginary parts of both diagonal and non-diagonal elements of the longitudinal susceptibility. The imaginary part of the longitudinal susceptibility is calculated numerically for spherical tokamaks in a wide range of wave frequencies and magnetic surface radii.

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Authors and Affiliations

  1. Karazin Kharkiv National University, pl. Svobody 4, Kharkiv, 61022, Ukraine

    N. I. Grishanov & N. A. Azarenkov

  2. Ukrainian State Academy of Railway Transport, pl. Feierbakha, Kharkiv, 61050, Ukraine

    N. I. Grishanov

Authors
  1. N. I. Grishanov
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  2. N. A. Azarenkov
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Correspondence to N. I. Grishanov.

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Original Russian Text © N.I. Grishanov, N.A. Azarenkov, 2013, published in Fizika Plazmy, 2013, Vol. 39, No. 12, pp. 1059–1070.

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Grishanov, N.I., Azarenkov, N.A. Electron Landau damping in toroidal plasma with Solov’ev equilibrium. Plasma Phys. Rep. 39, 947–958 (2013). https://doi.org/10.1134/S1063780X13120039

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  • DOI: https://doi.org/10.1134/S1063780X13120039

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