Diagnostics of Inhomogeneous Plasma Layers Using Tonks --- Dattner Resonances

Abstract

When diagnosing thin plasma inhomogeneous layers formed near the walls of various types of electric discharge devices (near the surfaces of electrodes, metal and dielectric screens), it can be difficult, and sometimes impossible, to use traditional methods of active (Langmuir and microwave probes) and optical (spectroscopy) diagnostics. These methods have some disadvantages related to the possible distortion of the plasma under study and the relatively low spatial resolution. In addition, the use of these contact methods in narrow wall layers is often limited by large heat fluxes, and the use of passive optical methods is hampered by the problem of radiation output from very small areas. In an inhomogeneous plasma, there is a connection between electro-magnetic waves excited from the outside and plasma waves (provided that there is a region where the phase velocities and frequencies of these waves are close). Then, the incident electromagnetic wave transforms into a plasma wave, and resonant effects may occur in the plasma formation. The article substantiates the possibility of using Tonks --- Dattner resonances for the diagnosis of plasma wall layers and provides a numerical verification of the proposed technique based on known experimental data

Please cite this article in English as:
Kozyrev A.V., Dokukin M.Yu. Diagnostics of inhomogeneous plasma layers using Tonks --- Dattner resonances. Herald of the Bauman Moscow State Technical University, Series Natural Sciences, 2026, no. 1 (124), pp. 69--80 (in Russ.). EDN: XLQYLD

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