Observation of Nonlinear Landau Damping of Electrostatic Waves in an Electron Beam-Plasma System
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概要
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The nonlinear Landau damping and growth of electrostatic waves in an electronbeam-plasma system in a magnetic field have been observed experimentally. Thespace charge wave of the beam decays nonlinearly into the Trivelpiece-Gouldmode, satisfying the resonant condition co. -a. -(k77. -k77.)v5=mco. (m is aninteger). This decayed wave can be amplified exponentially by increasing theamplitude of the pump wave. Similarly, an externally launched small amplitudetest wave, having the same frequency as the decayed wave, can be amplified atthe comparable rate. The nonlinear Landau damping coupling coefficientsmeasured experimentally are in good agreement with theory. The virtual wavehas also been observed. The pump wave amplitude decays strongly by the presenceof the large amplitude test wave.
- 社団法人日本物理学会の論文
- 1977-04-15
著者
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Sugaya Reiji
Department Of Physics Faculty Of Science Ehime University
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Sugaya Reiji
Department Of Physics Faculty Of Science Ehime Univerrsity
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Sugawa Masao
Department Of Physics Faculty Of Science Ehime University
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Sugawa Masao
Department Of Physics Faculty Of Science Ehime Univerrsity
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NOMOTO Hisayuki
Department of Physics,Faculty of Science,Ehime University
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Nomoto Hisayuki
Department Of Physics Faculty Of Science Ehime University
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Sugawa Masao
Department of Physics,Faculty of Science,Ehime University
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