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Magnetic phase transitions in plasmas and transport barriers

Emilia R. Solano, Richard D. Hazeltine2012年被引用 8Nuclear FusionIF 3出版社

A model of magnetic phase transitions in plasmas is presented: plasma elements with pressure excess or defect are dia- or paramagnets and move radially under the influence of the background plasma magnetization. It is found that magnetic phase separation could be the underlying mechanism of L to H transitions and drive transport barrier formation. Magnetic phase separation and the associated pedestal build-up, as described here, can be explained by the well-known interchange mechanism, now reinterpreted as a magnetization interchange. The interchange mechanism can drive motion of plasma elements even when stable. A testable necessary criterion for the L to H transition is presented.

日本語訳

プラズマにおける磁気相転移のモデルが提示される:圧力過剰または欠損を持つプラズマ要素は反磁性体または常磁性体であり、背景プラズマの磁化の影響下で径方向に移動する。磁気相分離がL-H遷移の根本的なメカニズムであり得、輸送障壁の形成を駆動することが見出される。ここで説明される磁気相分離とそれに伴うペデスタルの形成は、よく知られた交換機構によって説明でき、これは現在では磁化交換として再解釈される。交換機構は、安定な場合でもプラズマ要素の運動を駆動できる。L-H遷移のための検証可能な必要条件が提示される。

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