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Author Kamenski, I. V. ♦ Borg, G. G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ PLASMA PRODUCTION ♦ HELICON WAVES ♦ ANTENNAS ♦ MAGNETOHYDRODYNAMICS ♦ FINITE ELEMENT METHOD ♦ PLASMA DENSITY ♦ ICR HEATING
Abstract A magnetohydrodynamic numerical model, based on the finite element method, is employed to analyze the antenna radiation resistance in a cylindrical helicon wave driven plasma source. The antenna radiation resistances of four commonly used antennas are compared. The effects on antenna radiation resistance of frequency, plasma density, density profile and the system dimensions are investigated. It is confirmed that {ital m}=+1 is the most strongly excited mode. It is shown that the plasma density gradient tends to suppress the excitation of negative {ital m}-modes. Some wave field patterns are also presented which demonstrate commonly observed features in the experiments such as the beat patterns of copropagating radial modes. The findings highlight the importance of antenna radiation resistance modelling as a first step to a self consistent model of the discharge physics of cool dense helicon wave driven sources. {copyright} {ital 1996 American Institute of Physics.}
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-12-01
Publisher Place United States
Journal Physics of Plasmas
Volume Number 3
Issue Number 12


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