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Finite-amplitude circularly polarized waves in a magnetized multispecies plasma with drifts

F Verheest, K P Das1989年Plasma Physics and Controlled FusionIF 2.2出版社

It is shown that an exact (finite-amplitude) solution is possible for the propagation parallel to the external magnetic field of right and/or left circularly polarized waves in cold multispecies plasmas with different equilibrium drifts along the external magnetic field. The method of derivation indicates that such a plane-wave solution must be at constant amplitude. No special frequency regime is required for these finite-amplitude waves. Because of possible applications to cometary plasmas, a brief discussion is given of the Alfven or low-frequency, long-wavelength approximation.

日本語訳

外部磁場に平行な伝播に対して、外部磁場に沿った異なる平衡ドリフトを持つ冷たい多成分プラズマにおける右および/または左円偏波の厳密な(有限振幅)解が可能であることが示される。導出方法は、そのような平面波解が一定振幅でなければならないことを示している。これらの有限振幅波には特別な周波数領域は必要ない。彗星プラズマへの応用の可能性があるため、アルフヴェン近似または低周波・長波長近似について簡単な議論がなされる。

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