Ion confinement properties of high performance plasmas studie by charge exchange neutral particle energy analyzers on TRIAM-1M

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  • TRIAM-1Mにおける荷電交換中性粒子エネルギー分析器を用いた高性能プラズマのイオン閉じ込め特性に関する研究
  • TRIAM 1M ニ オケル カデン コウカン チュウセイ リュウシ エネルギー ブンセキキ オ モチイタ コウセイノウ プラズマ ノ イオン トジコメ トクセイ ニ カンスル ケンキュウ

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High performance plasmas have been studied on TRIAM-1M. In 2.45 GHz lower hybrid current drive (LHCD) a transition to a high ion temperature (HIT) mode is observed. This mode shows both high ion temperature and good confinement. Onset conditions and heating properties are studied. In 8.2 GHz LHCD plasmas an enhanced current drive (ECD) mode, characterized by enhanced current drive efficiency and improved energy confinement, is obtained. In the ECD transition phase improvement of ion energy transport is preceded by the enhancement of the current drive efficiency.

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