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Measurement of deuterium ion temperature profiles at TEXTOR-94

E Busche, H Euringer, R Jaspers1997年Plasma Physics and Controlled FusionIF 2.2出版社

Charge-exchange recombination spectroscopy (CXRS) has been used to compare results on ion temperatures from several diagnostics at TEXTOR-94. The question of whether the typically measured width of impurity spectral lines is representative for the main ion temperature , is addressed by applying CXRS to the Balmer-alpha spectrum of deuterium. The importance of the halo effect is found not to be severe for the measurements. is lower than the impurity temperatures for low-density discharges with neutral beam heating. The time evolution of and the toroidal rotation were also measured during sawtooth oscillations. From this a lower bound for the ion heat diffusivity of has been deduced.

日本語訳

電荷交換再結合分光法(CXRS)を用いて、TEXTOR-94における複数の診断法によるイオン温度の比較を行った。典型的に測定される不純物スペクトル線の幅が主イオン温度を代表するものであるかどうかという問題について、重水素のバルマーαスペクトルにCXRSを適用することにより検討した。ハロー効果の影響は、測定に対して重大ではないことが判明した。中性粒子ビーム加熱を伴う低密度放電において、は不純物温度よりも低い値となった。セーワトゥース振動中におけるおよびトロイダル回転の時間発展も測定された。これにより、イオン熱拡散係数の下限値が導出された。

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