An unconditionally stable time-domain discretization on cartesian meshes for the simulation of nonuniform magnetized cold plasma |
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Authors: | Wouter Tierens Daniël De Zutter |
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Institution: | Ghent University, Department of Information Technology, Sint-Pietersnieuwstraat 41, Ghent, Belgium |
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Abstract: | In this paper an unconditionally stable, spatially and temporally implicit time-domain discretization for nonuniform magnetized cold plasma is developed. The discrete dispersion relation is free of spurious solutions and approximates the continuous dispersion relation for well-resolved wavelengths and frequencies (kΔ ? π, ωΔt ? π). For a specific choice of parameters, the discrete dispersion relation approximates the continuous dispersion relation for all wavelengths and frequencies up to the Nyquist limit. A few examples, amongst them one involving mode conversion, illustrate the new method. |
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