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Transport of neutral particles in turbulent scrape-off layer plasmas

Y. Marandet, A. Mekkaoui, D. Reiter, P. Börner, P. Genesio, F. Catoire, J. Rosato, H. Capes, L. Godbert-Mouret, M. Koubiti2011年被引用 36Nuclear FusionIF 3出版社

The effect of turbulence on the transport of neutral species (atom, molecules) in plasmas is investigated. A stochastic model relying on a multivariate gamma distribution is introduced to describe turbulent fluctuations, and implemented in EIRENE. The effects of fluctuations on the neutral density and ionization source radial profiles are investigated. The role of temperature fluctuations is discussed in detail. Calculations with ITER scrape-off layer parameters are presented, and two distinct regimes with respect to the effects of temperature fluctuations are identified, depending on the far SOL mean temperature. Finally, the influence of fluctuations on impurity contamination is discussed.

日本語訳

プラズマ中の中性種(原子、分子)の輸送に対する乱流の影響が調査される。乱流揺動を記述するために、多変量ガンマ分布に基づく確率モデルが導入され、EIRENEに実装される。揺動が中性粒子密度および電離源の動径プロファイルに及ぼす影響が調査される。温度揺動の役割について詳しく議論される。ITERのスクレイプオフ層パラメータを用いた計算が提示され、遠方SOL平均温度に依存して、温度揺動の影響に関して二つの異なる領域が特定される。最後に、不純物混入に対する揺動の影響が議論される。

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Scrape-off layer
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