Axial Structure of Gas Discharge Sustained by the Eigen Dipolar Wave of The Metal Waveguide with Varying Radius Filled by Magnetized Nonuniform Plasma

Author:

Olefir VolodymyrORCID,Sporov OleksandrORCID,Azarenkov MykolaORCID

Abstract

The article presents the results of the theoretical study of the plasma density axial distribution in a stationary gas discharge sustained by the eigen dipolar wave that propagates in a long cylindrical plasma-metal structure. The discharge structure consists of a column of magnetized non-uniform plasma placed in the metal waveguide of variable radius. The study of the gas discharge is carried out within the framework of the electrodynamic model, in which the main attention is paid to the electrodynamic part of the model. To describe the processes that take place in plasma, the model equations are used. The influence of the metal waveguide inhomogeneity along the structure and the plasma density radial non-uniformity on the phase characteristics of the dipolar wave, its spatial attenuation, the field components radial distribution, the axial distribution of the plasma density sustained by this mode are determined. It is also analysed the condition for the discharge stability and find the regions, where dipolar mode can sustain the stable discharge. The obtained results can be useful for various technological applications.

Publisher

V. N. Karazin Kharkiv National University

Subject

General Physics and Astronomy,General Materials Science

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