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Response of the scrape-off layer plasma in the Frascati Tokamak to lower hybrid heating

V. Pericoli-Ridolfini1991年被引用 7Nuclear FusionIF 3出版社

The response of the scrape-off layer (SOL) plasma in the Frascati Tokamak to lower hybrid heating has been studied under different conditions of the main plasma. Two frequencies of the injected waves were used, namely 2.45 GHz and 8 GHz, with powers up to 400 kW and 200 kW, respectively. An appreciable reduction of the SOL density, up a factor of three for 2.45 GHz waves, and a modification of the density profile were observed in discharges with an averaged plasma density of ≤ 4×l013cm−3. It is proposed that these phenomena can be explained by the occurrence of ponderomotive forces exerted on the edge electrons by the wave electric field.

日本語訳

フラスカティ・トカマクにおけるスクレイプオフ層(SOL)プラズマの低混成波加熱に対する応答を、主プラズマの異なる条件下で研究した。入射波の周波数は2.45 GHzおよび8 GHzの2種類で、それぞれ最大出力400 kWおよび200 kWであった。平均プラズマ密度が4×10^13 cm^-3以下の条件下で、2.45 GHz波の場合にはSOL密度が最大3分の1まで顕著に減少し、密度分布の変化が観測された。これらの現象は、波動の電場によって端部電子に及ぼされるポンデロモーティブ力の発生によって説明できることが提案されている。

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Scrape-off layerLower hybrid
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