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ISSN: 1093-3611 Print
ISSN: 1940-4360 Online
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DOI: 10.1615/HighTempMatProc.v7.i2
Pages: 158
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DOI: 10.1615/HighTempMatProc.v7.i2.40
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Article price - $35.00 |
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PROPAGATION OF ELECTROMAGNETIC WAVES ALONG AN ANNULAR PLASMA COLUMN
Helena Nowakowska
Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, P.O. Box 621, 80-952 Gdansk, Poland
Zenon Zakrzewski
Centre of Plasma and Laser Engineering, Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk, Poland
M. Moisan
Groupe de physique des plasmas, Universite de Montreal, BP 6128, succursale Centre-ville, Montreal H3C 3J7, Quebec, Canada
ABSTRACT
Historically, surface wave sustained microwave plasmas were almost exclusively generated and investigated in a standard configuration of an elongated cylinder. One of the new configurations, proposed more recently, is Duo-plasmaline [1]. There, the plasma is located outside a cylindrical dielectric vessel, adjacent to its wall, and forms a structure of a ring shaped cross-section. An axially located cylindrical conductor corresponds to the outer metallic cylinder surrounding plasma in the standard configuration.
We report results of a numerical analysis of wave propagation in such annular structures in a wide range of plasma parameters. We show that two different waves may propagate, each related to one of the two boundary surfaces of the plasma. The waves can be clearly distinguished in the domain of large electron densities. Presented are calculated complex propagation coefficients of waves and radial distributions of the electromagnetic field. Asymptotic cases are defined and analyzed.
pages 7
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