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Drift wave type turbulence spectrum in a sheared magnetic field

A K Sen, S Y Kim1986年Plasma Physics and Controlled FusionIF 2.2出版社

The authors have developed a theory of broad band turbulent spectra of drift wave type instabilities in a sheared magnetic field. They show that different nonlinear processes are involved in determining the spectrum in different wave number ranges: nonlinear shear damping due to three wave resonant mode coupling, ion scattering of beat waves and Hasegawa-Mima (1977) strong turbulence solution. Consequently, the spectrum consists of several appropriately matched subspectra. The presence of an energy sink due to nonlinear shear damping ensures the existence of steady state turbulent solutions.

日本語訳

著者らは、シア磁場中のドリフト波型不安定性の広帯域乱流スペクトルの理論を構築した。彼らは、異なる波数領域においてスペクトルを決定する異なる非線形過程が関与することを示している:3波共鳴モード結合による非線形シア減衰、ビート波のイオン散乱、および長谷川・三間(1977)の強乱流解である。その結果、スペクトルは適切に整合したいくつかのサブスペクトルから構成される。非線形シア減衰によるエネルギーシンクの存在は、定常乱流解の存在を保証する。

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Drift waves
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