Finite Amplitude Ion Acoustic Waves in a Plasmon Gas
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概要
- 論文の詳細を見る
The propagation of ion acoustic waves interacting with plasmon gas is investigated within an approximation, such that the rapid oscillations of electron plasma wave are averaged out; the equations for the slow mode of the ion acoustic wave are thus obtained. The decay interaction plays an important role in this process and leads to 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 incompleteness of their result. It is found that the finite-amplitude ion acoustic wave in plasmon gas obeys a Korteweg-de Vries equation modified by two additional terms, which represent change of the phase velocity and damping or growth of the amplitude. The decay rate so obtained is also compared with that of the electron Landau damping.
- 社団法人日本物理学会の論文
- 1974-04-15
著者
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Satsuma Junkichi
Department Of Applied Mathematics And Physics Faculty Of Engineering Kyoto University
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Sakai Jun-ichi
Institute Of Plasma Physics Nagoya University
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Sakai Jun-ichi
Institute Of Plasma Physics Nagoya University:(present Address) Department Of Applid Mathematics Fac
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Yamaji Nobuo
Research Institute For Applied Mechamics Kyushu University
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Satsuma Junkichi
Department of Applied Mathematics and Physics, Kyoto University
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