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Lower hybrid effects on the FT scrape-off plasma

V Pericoli-Ridolfini1985年Plasma Physics and Controlled FusionIF 2.2出版社

The authors observe, by means of two single Langmuir probes that the scrape-off layer of FT (Frascati Tokamak) is modified during the lower hybrid (2.45 GHz) heating experiments. The modifications are completely different according to whether the plasma line average density is under or above the threshold density nth (Alladio et al., 1982, 1983) for RF-electrons interaction. Some interesting variations with the plasma current Ip and the toroidal field BT are found. The change in the transport properties in the scrape-off due to RF injection is discussed, together with the possibility of taking advantage of the observed phenomena.

日本語訳

著者らは、2本のラングミュアプローブを用いて、FT(フラスカティ・トカマク)のスクレープオフ層が低ハイブリッド(2.45 GHz)加熱実験中に変化することを観測した。その変化は、プラズマ線平均密度がRF電子相互作用の閾値密度nth(Alladioら、1982、1983)を下回るか上回るかによって完全に異なる。プラズマ電流Ipおよびトロイダル磁場BTに伴ういくつかの変動が見出された。RF入射によるスクレープオフ層の輸送特性の変化について、観測された現象を利用する可能性とともに議論する。

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