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arXiv · 1406.4449

ECRH beam broadening in the edge turbulent plasma of fusion machines

E. V. Sysoeva·F. da Silva·E. Z. Gusakov·S. Heuraux·A. Yu. Popov
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Abstract

Two analytical models for the ordinary mode propagating through inhomogeneous edge plasma layer are developed. Simple analytical expressions for diffusion-like angular and spatial beam width variation are obtained and compared to time-averaged results coming from 2D Maxwell's equations solver for different turbulence k-spectra and plasma conditions. The strong spatial broadening of microwave beam is predicted by the two approaches at realistic turbulent edge parameters for ECRH experiments at ITER.

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E. V. Sysoeva, F. da Silva, E. Z. Gusakov, S. Heuraux, A. Yu. Popov. 2014-06-17. ECRH beam broadening in the edge turbulent plasma of fusion machines. https://doi.org/10.1088/0029-5515/55/3/033016

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