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Linear Transformation of Electromagnetic Wave Beams of the Electron-Cyclotron Range in Toroidal Magnetic Configurations

  • Oscillations and Waves in Plasma
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Abstract

The field structure of quasi-optical wave beams tunneled through the evanescence region in the vicinity of the plasma cutoff in a nonuniform magnetoactive plasma is analyzed. This problem is traditionally associated with the process of linear transformation of ordinary and extraordinary waves. An approximate analytical solution is constructed for a rather general magnetic configuration applicable to spherical tokamaks, optimized stellarators, and other magnetic confinement systems with a constant plasma density on magnetic surfaces. A general technique for calculating the transformation coefficient of a finite-aperture wave beam is proposed, and the physical conditions required for the most efficient transformation are analyzed.

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Authors and Affiliations

  1. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia

    T. A. Khusainov, A. G. Shalashov & E. D. Gospodchikov

Authors
  1. T. A. Khusainov
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  2. A. G. Shalashov
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  3. E. D. Gospodchikov
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Correspondence to T. A. Khusainov.

Additional information

Original Russian Text © T.A. Khusainov, A.G. Shalashov, E.D. Gospodchikov, 2018, published in Fizika Plazmy, 2018, Vol. 44, No. 5, pp. 416–429.

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Khusainov, T.A., Shalashov, A.G. & Gospodchikov, E.D. Linear Transformation of Electromagnetic Wave Beams of the Electron-Cyclotron Range in Toroidal Magnetic Configurations. Plasma Phys. Rep. 44, 484–497 (2018). https://doi.org/10.1134/S1063780X18050070

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  • DOI: https://doi.org/10.1134/S1063780X18050070

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