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Turbulence and transport in the scrape-off layer TCABR tokamak

A A Ferreira, M V A P Heller, I L Caldas, E A Lerche, L F Ruchko, L A Baccalá2004年Plasma Physics and Controlled FusionIF 2.2出版社

We study the scrape-off layer turbulence and transport in Tokamak Chauffage Alfvén Brésilien (TCABR) before and during the launching of radio frequency excited waves that interact with the boundary plasma. We present the main characteristics of the background electrostatic fluctuations and the intermittent bursts. During the perturbation, the plasma turbulence intensity increases and the average phase velocity reverses its direction. The total turbulence driven transport and the transport radially convected by the intermittent fluctuation bursts also increase with the perturbation. The probability distributions of the bursts have long tails, resembling those typical of flight distributions with a decay parameter increasing with the wave excitation.

日本語訳

我々は、トカマク・シャフォージュ・アルヴェン・ブラジリアン(TCABR)において、境界プラズマと相互作用する高周波励起波の投入前および投入中におけるスクレイプオフ層の乱流と輸送を研究した。背景の静電揺動と間欠的バーストの主な特徴を示す。摂動中、プラズマ乱流強度は増大し、平均位相速度はその方向を反転させる。乱流駆動輸送全体と、間欠的揺動バーストによって径方向に対流輸送される輸送もまた、摂動とともに増大する。バーストの確率分布は長いテールを有し、これは波動励起に伴って減衰パラメータが増大する飛翔分布に典型的なものに類似している。

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Scrape-off layerTCABR
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