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Effect of a high-frequency electric field on the development of ion-acoustic instability in a current-carrying plasma

Yu.S. Kostyukova, F.M. Nekrasov1970年被引用 3Nuclear FusionIF 3出版社

The authors examine the effect of a high-frequency (h.f.) electric field on ion-acoustic oscillations in a magnetized non-isothermal (Te ≫ Ti) current-carrying plasma in which the direct current velocity w0 and the amplitude of the electron oscillatory velocity u0 = eE0/mΩ0 satisfy the condition w0, u0 ≪ vTe. Only those plasma perturbations are considered for which the inequality Ω0 ≪ kzvTe is fulfilled, kz being the wave vector component parallel to the constant magnetic field. Expressions are derived for growth rates in the regions Ω0 ≪ ωs and Ω0≫ωs, and for the case where the parametric resonance condition Ω0 = ωs is fulfilled (Ω0 is the h.f. field frequency, ωs is the ion-acoustic oscillation frequency).

日本語訳

著者らは、磁化された非等温(Te ≫ Ti)電流プラズマ中のイオン音響振動に対する高周波(h.f.)電場の影響を調べる。ここで、直流速度w0および電子の振動速度の振幅u0 = eE0/mΩ0は、条件w0, u0 ≪ vTeを満たす。考慮するプラズマ摂動は、不等式Ω0 ≪ kzvTeが満たされるものに限る。ここで、kzは一定磁場に平行な波数ベクトル成分である。成長率の式は、領域Ω0 ≪ ωsおよびΩ0 ≫ ωsについて導出され、またパラメトリック共鳴条件Ω0 = ωsが満たされる場合についても導出される(Ω0はh.f.電場の周波数、ωsはイオン音響振動周波数である)。

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