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Turbulent correlations and anomalous transport in tokamaks. II. Applications to text

A Thyagaraja, F A Haas1989年Plasma Physics and Controlled FusionIF 2.2出版社

For pt.I see ibid., vol.31, p.965 (1989). A parallel kinetic approach is adopted to explain and interpret recent measurements relating to plasma turbulence and transport in the TEXT Tokamak. It is shown that the knowledge of experimentally determined profiles of density, temperature and source strengths combined with measurements of a single fluctuating quantity (i.e. electrostatic potential) can be used to account for energy and particle fluxes and turbulent correlations with other fluctuations (e.g. density) measured in the device. The theory predicts the magnetic fluctuation spectrum which is consistent with the measured density fluctuations. It suggests, independently of the mechanisms responsible for the observed turbulent spectra, that the observed transport properties are explainable in terms of the electromagnetic turbulence in TEXT. A notable feature of the results is the fact that semi-quantitative agreement with experiment (well within experimental errors in several cases) is secured even though the theoretical model neglects toroidal/trapped particle effects entirely.

日本語訳

第I部については、同誌第31巻965頁(1989年)を参照されたい。TEXTトカマクにおけるプラズマ乱流と輸送に関する最近の測定結果を解釈・説明するために、平行運動論的アプローチを採用する。密度・温度・源強度の実験的に決定された分布と、単一の変動量(すなわち静電ポテンシャル)の測定を組み合わせることで、装置内で測定されたエネルギー・粒子フラックスおよび他の変動量(すなわち密度)との乱流相関を説明できることが示される。この理論は、測定された密度変動と整合する磁気変動スペクトルを予測する。観測された乱流スペクトルの原因となる機構とは独立に、観測された輸送特性はTEXTにおける電磁乱流によって説明可能であることが示唆される。結果の特筆すべき点は、理論モデルがトロイダル効果および捕捉粒子効果を完全に無視しているにもかかわらず、実験と半定量的に一致し(いくつかの場合には実験誤差の範囲内で十分に一致する)という事実である。

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TEXTAnomalous transport
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