Group propagation in a multicomponent magnetoplasma

概要

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The purpose of this paper is to investigate numerically the dispersion characteristics and guiding mechanism of electromagnetic waves in a multicomponent magnetoplasma. The problem is very important in exospheric raio wave propagation.<BR>Dependence of group velocity on wave frequency is plotted with wave normal angle as a parameter for plasmas with different ion compositions. The guiding mechanism due to magnetoionic ducting is also discussed at VLF-ELF-ULF whistler frequency ranges in the exosphere. Especially the effect of ions appears very serious in ELF frequency range. Simple considerations are given for newly observed ELF whistlers.
社団法人プラズマ・核融合学会の論文