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Generation of zonal perturbations and transport barriers in plasmas

F. Militello, M. Romanelli, J.W. Connor, R.J. Hastie2011年被引用 5Nuclear FusionIF 3出版社

It is shown that drift wave plasma turbulence in the electromagnetic regime can significantly affect the zonal flow dynamics and drive zonal fields. A new interpretation of the effect of the zonal fields on the zonal flow stability is given as previous analytic predictions are shown to be inadequate for accurately describing the numerical results. The zonal flow/field excitation mechanism in the electromagnetic regime can provide a possible explanation for the observed correlation between transport barrier formation and low shear rational surfaces in the plasma.

日本語訳

電磁領域におけるドリフト波プラズマ乱流が、帯状流ダイナミクスに有意に影響を及ぼし、帯状場を駆動し得ることが示されている。帯状場が帯状流安定性に及ぼす影響に関する新たな解釈が提示されており、従来の解析的予測が数値結果を正確に記述するには不十分であることが示されている。電磁領域における帯状流/帯状場励起メカニズムは、プラズマ中の輸送障壁形成と低シア有理面との間に観測される相関関係に対する有力な説明を提供し得る。

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