Excitation of higher radial modes of azimuthal surface waves in the electron cyclotron frequency range by rotating relativistic flow of electrons in cylindrical waveguides partially filled by plasmas

2018 ◽  
Vol 25 (5) ◽  
pp. 052109 ◽  
Author(s):  
Igor O. Girka ◽  
Ivan V. Pavlenko ◽  
Manfred Thumm
Keyword(s):  
Surface Waves ◽  
Cyclotron Frequency ◽  
Electron Cyclotron ◽  
Frequency Range ◽  
Electron Cyclotron Frequency ◽  
Cylindrical Waveguides ◽  
Relativistic Flow

Ray-tracing in the electron-cyclotron frequency region

1978 ◽  
Vol 20 (2) ◽  
pp. 299-311 ◽  
Author(s):  
F. de Luca ◽  
C. Maroli
Keyword(s):  
Cyclotron Frequency ◽  
Frequency Region ◽  
Electron Cyclotron ◽  
Mode Propagation ◽  
Frequency Range ◽  
Structure Generation ◽  
Electron Cyclotron Frequency ◽  
Hybrid Resonance ◽  
Toroidal Geometry ◽  
Density Regime

The tracing of the geometrical optics rays in toroidal geometry and in the electron-cyclotron frequency range has been done numerically. The results presented are relevant to the extraordinary-mode propagation and conversion at the upper-hybrid resonance layer. High-density regime refraction effects, together with strong bending of the warm Bernstein rays along the toroidal direction and resonance-cone structure generation, are the main features of the numerical output.

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