Finite Amplitude Ion Acoustic Waves in a Plasmon Gas
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概要
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The propagation of ion acoustic waves interacting with plasmon gas is investigated by eliminating the fast varying part from the variation of the system through an adequate averaging procedure. The decay interaction plays an important role in this process and leads to the damping or growth of the ion acoustic wave depending on the shape of the plasmon energy spectrum. The result in the linear approximation is compared with that obtained by Vedenov and Rudakov to show the incompleteness of their result. It is found that the finite amplitude ion acoustic wave in plasmon gas is subject to the KdV equation modified by two additional terms which represent the change of the phase velocity and the damping or growth of the amplitude. The comparison of the obtained decay rate with that of the electron Landau damping is also made.
- 核融合科学研究所の論文
著者
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Satsuma Junkichi
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Applied Math
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Sakai Junichi
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Applied Math
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Yajima Nobuo
Research Information Center Institute Of Plasma Physics Nagoya University:research Institute For App
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Yajima Nobuo
Research Information Center Institute Of Plasma Physics Nagoya University
-
Satsuma Junkichi
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Applied Math
-
Sakai Junichi
Research Information Center Institute Of Plasma Physics Nagoya University
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