MODULATIONAL INSTABILITY AND ENVELOPE-SOLITONS FOR NONLINEAR ALFVEN WAVES PROPAGATING ALONG THE MAGNETIC FIELD IN COLD PLASMAS
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概要
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The modulational instability and envelope-solitons for the Alfven waves propagating along the static magnetic field in cold collisionless plasmas are analyzed using the modified nonlinear Schrodinger equation derived previously by the authors. It is shown that the modulational instability exists for a small amplitude but does not for a amplitude larger than the critical value in the case of the left-hand circularly polarized Alfven wave (left Alfven wave). On the other hand, the modulational instability does not exist for the right=hand circularly polarized Alfven wave (right Alfven wave). Without the modulational instability, the rarefactive and compressive envelope-solitons exist for the left Alfven wave and the two types of the rarefactive envelope-solitons for the right Alfven wave.
- 核融合科学研究所の論文
著者
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Mio K.
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electrical E
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Mio K.
Institute of Plasma Physics, Nagoya University
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Ogino T.
Institute of Plasma Physics, Nagoya University
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Minami K.
Institute of Plasma Physics, Nagoya University
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Takeda S.
Institute of Plasma Physics, Nagoya University
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Ogino T.
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electrical Engineering Nagoya University
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- Modified Nonlinear Schrodinger Equation for Alfven Waves Propagating along the Magnetic Field in Cold Plasmas