Observation of Nonlinear Laudau Damping of Electrostatic Waves in an Electron Beam-Plasma System.III
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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 waves of the beam decay nonlinearly into the Trivelpiece-Gouldmode, satisfying the resonant condition co. -co. -(k77. -k77?)v77=co. (v77 is theparallel velocity of plasma electrons). This nonresonant decay is due to thenonlinear interaction of two v,'aves with the plasma electrons. The decay wave canbe amplified exponentially by increasing the amplitude of the pump wave. Sim-ilarly, an externally Iatmched small amplitude test wave, having the same frequencyas the decay wave, can be amplified at the comparable rate. The nonlinear Landaudamping coupling coefficient measured experimentally is compared with theory.The electt'on heating due to this nonresonant decay has also been observed expert-mentally.
- 社団法人日本物理学会の論文
- 1978-11-15
著者
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Sugaya Reiji
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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SUGAYA Reiji
Depertment of Physics,Faculty of Science,Ehime University
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SUGAWA Masao
Depertment of Physics,Faculty of Science,Ehime University
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NOMOTO Hisayuki
Depertment 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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