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Evidence of enhanced self-organized criticality (SOC) dynamics during the radially non-local transient transport in the HL-2A tokamak

O. Pan, Y. Xu, C. Hidalgo, W.L. Zhong, Z.B. Shi, X.Q. Ji, M. Jiang, B.B. Feng, Y. Zhou, J. Cheng2015年被引用 18Nuclear FusionIF 3出版社

Self-organized criticality (SOC) dynamics have been investigated in non-local transport regimes induced by the supersonic molecular beam injection in the HL-2A tokamak. Experimental evidence shows that the SOC or avalanche behaviors, such as the Hurst parameter, self-similarity and large-scale radial correlations in turbulence, are remarkably enhanced during the prompt non-local phase, together with an increase of inward propagation of turbulent events. These results highlight the importance of SOC paradigm during the transient non-local thermal transport in magnetically confined plasmas.

日本語訳

自己組織化臨界性(SOC)ダイナミクスが、HL-2Aトカマクにおける超音速分子ビーム入射によって誘起された非局所輸送過程において調査された。実験的証拠は、SOCまたはなだれ的挙動、すなわちハースト指数、自己相似性、および大規模な径方向相関が、非局所相の間に顕著に増強されることを示しており、それに伴って乱流イベントの内向き伝播が増加する。これらの結果は、磁場閉じ込めプラズマにおける過渡的非局所熱輸送中のSOCパラダイムの重要性を強調するものである。

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