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The particle fluxes in the edge plasma during discharges with improved ohmic confinement in ASDEX

H Verbeek, W Poschenrieder, A Carlson, J -K Fu, K McCormick, N Tsois, F X Soldner, The ASDEX Team1990年Plasma Physics and Controlled FusionIF 2.2出版社

In the regime of Improved Ohmic Confinement (IOC) in ASDEX the energy confinement time tau E increases linearly with increasing line-averaged density ne up to the density limit. The establishment of the IOC is accompanied by a substantial reduction of the external gas feed, concomitant with large decreases of all plasma edge fluxes. However, the data do not supply conclusive evidence that the IOC is primarily connected with the recycling conditions. More recent observations with very clean machine conditions seem to indicate that the impurity radiation plays a significant role.

日本語訳

改善されたオーミック閉じ込め(IOC)領域におけるASDEXでは、エネルギー閉じ込め時間τEは、線平均密度neの増加に伴って密度限界まで線形的に増加する。IOCの確立は、外部ガス供給の大幅な低減を伴い、それと同時にすべてのプラズマ端部フラックスの大きな減少が生じる。しかしながら、データはIOCが主としてリサイクリング条件と関連しているという決定的な証拠を提供するものではない。非常に清浄な装置条件下での最近の観測は、不純物放射が重要な役割を果たしていることを示しているようである。

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ASDEXEdge plasmaOhmic heating
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