Modulational Instability of Ion Wave in Plasma with Negative Ion
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概要
- 論文の詳細を見る
A modulational instability of an ion wave in a plasma composed of electron,positive ion and negative ion has been investigated theoretically. We derive anonlinear Schr5dingcr equation for ton wave and examine the signs of nonlinearand dispersion coefficients. The dispersion coefficient is negative irrespective ofthe wavenumber. The sign of the nonlinear coefficient changes at a critical wave-number k., above which the coefficient becomes negative and the ion wave ismodulationally unstable. The critical wavenumber k. depends strongly on thenegative ion density. At the critical density of negative ion where the nonlinearcoefficient of the Korteweg-de Vries equation for ton wave vanishes, the criticalwavenumber k. is reduced to zero and the wave of any wavenumber is modula-tiona[Iy unstable.
- 社団法人日本物理学会の論文
- 1984-07-15
著者
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Saito Maki
Research Institute For Energy Materials Yokohama National University
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WATANABE Shinsuke
Research Institute for Energy Materials,Yokohama National University
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Tanaca Hiroshi
Research Institute For Energy Materials Yokohama National University
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Watanabe Shinsuke
Research Information Center Institute Of Plasma Physics Nagoya University:research Institute For Ene
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