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Critical edge parameters for H-mode transition in DIII-D

R J Groebner, T N Carlstrom1998年Plasma Physics and Controlled FusionIF 2.2出版社

Measurements in DIII-D of edge ion and electron temperatures ( and ) just prior to the transition to H-mode are presented. A fitting model based on a hyperbolic tangent function is used in the analysis. The edge temperatures are observed to increase during the L-phase with the application of auxiliary heating. The temperature rise is small if the H-mode power threshold is close to the ohmic power level in the absence of auxiliary heating and is large if the H-mode threshold is well above the ohmic power level. The edge temperatures just prior to the transition are approximately proportional to the toroidal magnetic field , for the field either in the reversed or forward direction. However, for the reversed magnetic field, the temperatures are at least a factor of two higher than for the forward direction.

日本語訳

DIII-DにおけるHモード遷移直前の端部イオン温度および電子温度( および )の測定結果を提示する。解析には双曲正接関数に基づくフィッティングモデルを用いた。補助加熱の印加により、L相期間中の端部温度が上昇することが観測された。温度上昇は、補助加熱がない場合のHモード閾値パワーがオーミックパワーに近い場合には小さく、Hモード閾値がオーミックパワーを十分に上回る場合には大きい。遷移直前の端部温度は、磁場の方向が逆方向または順方向のいずれの場合でも、トロイダル磁場にほぼ比例する。しかし、逆方向磁場の場合、端部温度は順方向の場合よりも少なくとも2倍高い。

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diii-d高精度(タイトル一致)

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DIII-DH-mode
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