Absorption and Transformation of Electromagnetic Waves in the Vicinity of Electron Cyclotron Harmonics.
NAVAL RESEARCH LAB WASHINGTON D C
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The recent development of multikilowatt millimeter wave sources has motivated the study of electron cyclotron heating of tokamaks. The direct absorption of the ordinary and extraordinary modes at the first and second harmonics of the electron cyclotron frequency are examined. For K x B O WKB theory is inapplicable and a full wave treatment is necessary to determine transmission, absorption, reflection and mode conversion coefficients. The ordinary wave is efficiently absorbed at the first harmonic. The extraordinary wave is efficiently absorbed at the second harmonic due to mode conversion of the incident wave to a highly damped electrostatic wave. Author
- Electricity and Magnetism
- Plasma Physics and Magnetohydrodynamics