Absorption of high-frequency electromagnetic waves by a transversely magnetised cold plasma waveguide

Abstract

Shows the possibility of generating magneto-active plasmas in a waveguide by the use of electromagnetic waves launched transversely to the static magnetic field for ordinary and extraordinary polarisation. With extraordinary polarisation, plasmas of densities of about 1017 m-3 can be obtained at low power levels. The working gas was argon and the static magnetic field about 0.09 T. Plasma density is limited by the frequency of the incident waves (2.45 GHz in the authors' case) and not by the mechanism of wave transformation.

Production of pulsed microwave plasma in a tube with a radius below the cut-off value

“…In waveguide-type plasma sources (e.g. Bustamante et al 1989), if the total launched microwaves are passed through a narrow cross sectional tube, the microwave power density can be increased and a compact high-density plasma would be realized. Usually, for plasma production and maintenance in the tube by microwaves, the waveguide transverse size is made larger than the cut-off value of the fundamental mode to allow wave propagation.…”

Analysis of Landau damping in radially inhomogeneous plasma column

“…Several theoretical and experimental studies have been conducted to describe the guiding mechanism of electromagnetic waves by a plasma waveguide. [1][2][3] Some important applications can be found in various areas such as high power microwave (HPM) devices, [4,5] industrial plasmas, plasma diagnosis [6] and plasma limiters. [7,8] The latter is used in protective devices against HPM and pulses with very short rising time.…”

Effect on Landau damping rates for a non-Maxwellian distribution function consisting of two electron populations

“…Several theoretical and experimental studies have been conducted to describe the guiding mechanism of electromagnetic waves by a plasma waveguide. [1][2][3] Some important applications can be found in various areas such as high power microwave (HPM) devices, [4,5] industrial plasmas, plasma diagnosis [6] and plasma limiters. [7,8] The latter is used in protective devices against HPM and pulses with very short rising time.…”