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Spectroscopic study of ECH and neutral beam injection heating of the Heliotron E plasma

C Christou, K Kondo, F Sano, H Zushi, T Obiki1997年Fusion Engineering and DesignIF 1.7出版社

AbstractVUV, UV and visible spectroscopy of fusion plasmas enables the main plasma contaminants to be identified, and time-resolved measurements allow a study of the development of the major impurity emission lines to be undertaken. In this work, Heliotron E VUV emission is shown to be dominated by oxygen, carbon, iron and nickel lines, and a scan of the emission in the UV-visible range reveals that the most intense impurity lines in this range are from boron, carbon and oxygen. P, study of Ha and Da emission from the plasma is carried out, and it is found that the release of hydrogen from the vessel wall is the dominant source of hydrogen in the discharge plasma. Preliminary spectroscopic results of lithium injection into the plasma are also presented.

日本語訳

要旨:核融合プラズマのVUV・UV・可視分光により、主要なプラズマ不純物の同定が可能となり、時間分解測定によって主要な不純物輝線の発生過程の研究が可能となる。本研究では、ヘリオトロンEのVUV発光が酸素、炭素、鉄、ニッケルの輝線によって支配されていることを示す。また、UV-可視域のスペクトル走査により、この波長域で最も強度の高い不純物輝線がホウ素、炭素、酸素に由来することを明らかにする。さらに、プラズマからのHαおよびDα発光の研究を行い、放電プラズマ中の水素の主要な供給源が壁からの水素放出であることを見出す。加えて、リチウム注入プラズマの予備的な分光結果も提示する。

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Neutral beamNeutral beam injectionElectron cyclotron heatingHeliotronIon heating
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