Decay Instability of Cyclotron Harmonic Plasma Waves
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概要
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The decay instability of cyclotron harmonic plasma waves is investigated by solving the nonlinear Vlasov equation to the second order in powers of the wave amplitude. For a Maxwellian plasma, it is shown that a single cyclotron harmonic wave with frequency ω_0(k_0) can decay into two other modes with ω_1(k_1) and ω_2(k_2) when the three waves satisfy the decay condition: ω_0=ω_1+ω_2, k_0=k_1+k_2. For a ring velocity distribution, it is shown that a mode with ω_0 decays into a negative energy wave ω_1 and a positive one ω_2 under the matching condition: ω_0=ω_1∼ω_2, k_0=k_1∼k_2, where∼denotes the difference. The growth rates of the decay instability are solved numerically and the results are illustrated.
- 社団法人日本物理学会の論文
- 1970-11-05
著者
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Amano Tsuneo
Plasma Physics Laboratory Faculty Of Engineering Osaka University
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Okamoto Masao
Department Of Nuclear Engineering Faculty Of Engineering Kyoto University
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Amano Tsuneo
Plasma Physics Laboratory, Faculty of Engineering Osaka University
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