Electrodynamics of wide spectrum plasma waveguide surrounding with a periodic succession of metallic rings

Summary form only given, as follows. Hybrid plasma slow-wave structure as a combination of conventional structure and plasma waveguide is promising for wideband HF-devices with enhanced efficiency. In the present investigations the periodic succession of metallic rings surrounding a plasma waveguide is considered. The dispersion characteristics, field topography, HF-power distribution, growth rate and efficiency estimations are presented. The possibility of wide-band high frequency generation in the structures considered is shown.