Linear Transformation of Electromagnetic Wave Beams of the Electron-Cyclotron Range in Toroidal Magnetic Configurations
- Authors: Khusainov T.A.1, Shalashov A.G.1, Gospodchikov E.D.1
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Affiliations:
- Institute of Applied Physics
- Issue: Vol 44, No 5 (2018)
- Pages: 484-497
- Section: Oscillations and Waves in Plasma
- URL: https://journals.rcsi.science/1063-780X/article/view/186758
- DOI: https://doi.org/10.1134/S1063780X18050070
- ID: 186758
Cite item
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.
About the authors
T. A. Khusainov
Institute of Applied Physics
Author for correspondence.
Email: hta@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
A. G. Shalashov
Institute of Applied Physics
Email: hta@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
E. D. Gospodchikov
Institute of Applied Physics
Email: hta@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950