Nonlinear Wave-Particle Interaction in a Weak Cold Beam-Plasma System
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概要
- 論文の詳細を見る
Nonlinear spatial evolutions of both plasma waves and beam electrons are studied in a weak cold beam-plasma system, where the validity of weak turbulent theory is violated. Externally driven single unstable wave grows exponentially until the beam electrons are trapped and begin to revolve in wave phase space. These trapped electrons continue to rotate from initial velocity bunching, to spatial bunching, to velocity bunching, and so on, causing nonlinear wave saturetion at a level with ω_B/γ_L∼1. Further, when the beam electrons are trapped, there appears the trapped-electron instability at the frequency of ω±ω_B. At the phase of the spatial bunching, harmonics of the wave resulted from nonlinearities of the electron orbits become maximum and their power spectra up to the 5th are observed. The results agree with those predicted theoretically by a single wave model.
- 社団法人日本物理学会の論文
- 1973-12-05
著者
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Tanaka Shigetoshi
Department Of Physics Faculty Of Science Kyoto University
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Mizuno Katsuhiro
Department Of Physics Faculty Of Science Kyoto University
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TANAKA Shigetoshi
Department of Physics, Faculty of Science, Kyoto University
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