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Observations of toroidal plasma rotation induced by ICRH in JET

L -G Eriksson, R Giannella, T Hellsten, E Kallne, G Sundstrom1992年Plasma Physics and Controlled FusionIF 2.2出版社

Changes of the toroidal rotation velocity of up to 3*104 m s-1 have been observed during ICRH in JET. The plasma increases its toroidal rotation in the direction of the plasma current. The change in velocity is obtained from the measurement of the Doppler shifted X-ray lines emitted from He-like nickel present in the centre of the plasma. By analyzing various heating scenarios and also measuring the fast anisotropic ion energy content of the plasma the authors conclude the rotation is connected with the creation of fast ions during ion cyclotron resonance heating. Toroidal acceleration of the plasma in connection with MHD instabilities leading to similar magnitude of rotational velocity is also seen.

日本語訳

JETにおけるICRH中に、最大3×10⁴ m s⁻¹のトロイダル回転速度の変化が観測された。プラズマはプラズマ電流の方向にトロイダル回転を増加させる。この速度変化は、プラズマ中心部に存在するヘリウム様ニッケルから放出されるドップラーシフトしたX線スペクトルの測定から得られた。様々な加熱シナリオを解析し、高速異方性イオンのエネルギー含有量を測定することにより、著者らはこの回転がイオンサイクロトロン共鳴加熱中の高速イオンの生成と関連していると結論づけた。MHD不安定性に関連したプラズマのトロイダル加速も観測され、同程度の大きさの回転速度変化をもたらすことが確認された。

装置

jet高精度(タイトル一致)

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JETIon cyclotron heatingPlasma rotation
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