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Current issue   Ukr. J. Phys. 2014, Vol. 58, N 8, p.719-724

    Paper

Skibenko A.I.

National Science Center Kharkiv Institute of Physics and Technology
(1, Akademichna Str., Kharkiv 61108, Ukraine; e-mail: a-skibenko@mail.ru)

UHF Reflectometry of Plasma by Extraordinary Waves with a Frequency below the Electron Cyclotron Frequency

Section: Plasmas and gases
Original Author's Text: Ukrainian

Abstract: Comparative dependences of the refractive index on the profiles of a plasma density and a magnetic field are found for ordinary and extraordinary waves under various conditions of plasma probing. Advantages of using the extraordinary wave (X-wave) with a frequency below the electron cyclotron frequency for the diagnostics of a magnetoactive plasma are analyzed with regard for the experimental conditions on a U-3M torsatron. The refraction of microwaves at the oblique plasma probing is studied taking the poloidal component of a magnetic field into consideration. The Doppler shift of an X-wave reflected from the moving plasma layer is found to exceed that of an ordinary wave (O-wave).

Key words: : UHF reflectometry of plasma, Doppler shift.