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Evidence of suppression of ITG-instability in the radiatively improved mode in TEXTOR-94

M Z Tokar, R Jaspers, R R Weynants, H R Koslowski, A Krämer-Flecken, A M Messiaen, J Ongena, B Unterberg1999年Plasma Physics and Controlled FusionIF 2.2出版社

Characteristics of the toroidal ITG-instability are analysed for conditions of the L-mode and the radiatively improved (RI) mode triggered in TEXTOR-94 by puffing of neon. Analysis is performed for experimentally measured profiles of the plasma parameters and densities of impurity species. It is shown that in the RI-mode the anomalous transport induced by this kind of instability is reduced significantly in a large part of the plasma volume. This is an important channel of the energy confinement improvement. The role of the radial electric field is envisaged.

日本語訳

トロイダルITG不安定性の特性を、TEXTOR-94においてネオン入射によって誘起されたLモードおよび放射改善(RI)モードの条件下で解析した。解析は、プラズマパラメータおよび不純物種密度の実験的に測定された分布に対して実施された。RIモードでは、この種の不安定性によって誘起される異常輸送が、プラズマ体積の大部分において有意に低減されることが示された。これはエネルギー閉じ込め改善の重要な経路である。さらに、径方向電場の役割について考察した。

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textor高精度(タイトル一致)

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TEXTORIon temperature gradient
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