On the Dispersion Properties of Waveguides Filled with a Magnetized Plasma

Journal Article · Fri Jul 15 04:00:00 EDT 2005 · Plasma Physics Reports

DOI:https://doi.org/10.1134/1.1992587· OSTI ID:20718015

Zaginaylov, G I; Shcherbinin, V I ^[1]; Shuenemann, K ^[2]

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1. Karazin National University, pl. Svobody 4, Kharkov, 61077 (Ukraine)
2. Technische Universitaet Hamburg-Harburg, Hamburg, 21073 (Germany)

A study is made of the dispersion properties of waveguides filled with a magnetized plasma. It is shown that the eigenmodes of the waveguides filled with a low-density magnetized plasma fall into two families, which are weakly coupled to one another at all frequencies, in particular, in the cyclotron resonance frequency range. These families differ in transverse wavenumbers and the modes in them have hybrid polarization. Attention is focused on the study of the modes that have predominantly TE polarization at frequencies close to the cutoff frequency. The dependence of the critical frequencies of the TE modes on the plasma frequency, as well as the influence of the plasma on the energy flux and energy density of these modes, is investigated. The effect of mode crowding (the existence of an arbitrarily large number of dispersion curves in a finite frequency range between the cyclotron frequency and the upper hybrid frequency) is examined in detail. The results obtained are used to analyze how the plasma affects the electromagnetic properties of the cavity of the 1-MW 140-GHz continuous-wave gyrotron developed at the Institute of Pulsed and Microwave Technology of the Research Center in Karlsruhe, Germany (Institut fuer Hochleistungsimpuls- und Mikrowellentechnik Forschungszentrum Karlsruhe) for plasma heating in the W7-X stellarator, which is being constructed in Greifswald, Germany.

• OSTI ID: 20718015
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 7 Vol. 31; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CRITICAL FREQUENCY
CYCLOTRON FREQUENCY
CYCLOTRON RESONANCE
DISPERSION RELATIONS
ENERGY DENSITY
FORSCHUNGSZENTRUM KARLSRUHE
GHZ RANGE
LANGMUIR FREQUENCY
MICROWAVE RADIATION
PLASMA
PLASMA DENSITY
PLASMA HEATING
POLARIZATION
WAVEGUIDES