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Characteristics of surface-wave propagation in dissipative cylindrical plasma columns

Published online by Cambridge University Press:  13 March 2009

J. Margot
Affiliation:
Groupe de physique des plasmas, Département de Physique, Université de Montréal, B.P. 6128, Succursale A, Montréal Québec, Canada H3C 3J7
M. Moisan
Affiliation:
Groupe de physique des plasmas, Département de Physique, Université de Montréal, B.P. 6128, Succursale A, Montréal Québec, Canada H3C 3J7

Abstract

Electromagnetic surface waves dissipate energy as they propagate in plasma columns. The transfer of energy to the discharge generally occurs through collisional processes — hence the name ‘collisional’ surface waves. It affects the direction of propagation of the wave, and is responsible in particular for the turning back of the axial wavenumber on the phase diagram. The rate of collisions also influences the respective contribution of surface waves and radiation (unguided) waves to the total electromagnetic field. These considerations are of interest in improving the reliability and accuracy of the electron density diagnostic based on surface waves. This paper takes advantage of the many articles published in the domain of guided waves for antennas.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1993

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