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Nonlinear interaction between electrostatic ion cyclotron waves and ion beams in an ion beam-plasma system

M Sugawa1992年Plasma Physics and Controlled FusionIF 2.2出版社

The amplitude oscillation due to wave-trapped particle interaction of absolutely unstable electrostatic ion cyclotron waves (EIC waves) in an ion beam-plasma system, its decay, and the generation of sideband waves as a normal EIC mode have been investigated. The external excitation of sideband EIC waves slows down the ion beam and deforms strongly the energy distribution of the ion beam. Then strong decay of absolutely unstable waves occurs. The generation of these two modes deforms the beam distribution, broadens its energy spectrum spread and randomizes the particle trapped in waves. The behaviors of waves and particles in agreement with numerical results based on a model of many wave-particle interactions.

日本語訳

イオンビーム-プラズマ系における絶対不安定静電イオンサイクロトロン波(EIC波)の波動-粒子捕獲による振幅振動、その減衰、およびサイドバンド波の通常モードとしての生成について調べた。サイドバンドEIC波の外部励起は、イオンビームを減速させ、イオンビームのエネルギー分布を強く変形させる。その後、絶対不安定波の強い減衰が生じる。これら二つのモードの生成は、ビーム分布を変形させ、そのエネルギー幅を広げ、波動に捕獲された粒子を無秩序化する。波動と粒子の挙動は、多数の波動-粒子相互作用に基づくモデルによる数値計算結果と一致する。

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