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Higher radial modes of azimuthal surface waves in magnetoactive cylindrical plasma waveguides

Published online by Cambridge University Press:  05 November 2018

Igor O. Girka Open the ORCID record for Igor O. Girka [Opens in a new window] ,
V. M. Kondratenko  and
M. Thumm
Igor O. Girka*
Affiliation:
V.N. Karazin Kharkiv National University, Kharkiv, 61022, Ukraine
V. M. Kondratenko
Affiliation:
V.N. Karazin Kharkiv National University, Kharkiv, 61022, Ukraine
M. Thumm
Affiliation:
Karlsruhe Institute of Technology, IHM and IHE, 76131, Karlsruhe, Germany
*
†Email address for correspondence: igorgirka@karazin.ua
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Abstract

Azimuthal surface waves are eigenmodes of cylindrical plasma–dielectric–metal structures both in the presence of and without an axial static magnetic field. They are actively studied due to possible applications in plasma electronics, nanotechnologies and biomedical diagnostics. Higher radial modes are known to propagate at higher frequencies and shorter wavelengths compared to those of the zeroth mode, a feature which is of interest for practical applications. To gain the advantage of the excitation of higher radial modes of azimuthal surface waves one has first to know their dispersion properties. This paper generalizes the results of earlier papers by including a static axial magnetic field and considering the higher radial modes. The presence of the constant axial magnetic field removes the degeneracy in the wave spectrum with respect to the sign of the azimuthal wavenumber.

Keywords

plasma waves
Type
Research Article
Information
Journal of Plasma Physics , Volume 84 , Issue 6 , December 2018 , 905840603
Copyright
© Cambridge University Press 2018 

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