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Impurity analysis of NSTX using a transmission grating-based imaging spectrometer

Deepak Kumar, Michael Finkenthal, Dan Stutman, Ronald E Bell, Daniel J Clayton, Ahmed Diallo, Ben P LeBlanc, Mario Podesta, Kevin Tritz2012年Plasma Physics and Controlled FusionIF 2.2出版社

A transmission grating-based imaging spectrometer has recently been installed and operated on the National Spherical Torus Experiment (NSTX) at PPPL. This paper describes the spectral and spatial characteristics of impurity emission under different operating conditions of the experiment—neutral beam heated, ohmic heated and RF heated plasma. A typical spectrum from each scenario is analyzed to provide quantitative estimates of impurity fractions in the plasma.

日本語訳

透過型グレーティングを用いたイメージング分光器が、PPPLのナショナル・スポリダル・トーラス実験装置(NSTX)に最近設置され、運用が開始された。本論文では、実験の異なる運転条件——中性粒子ビーム加熱、オーミック加熱、RF加熱プラズマ——における不純物発光のスペクトル特性について述べる。各シナリオから得られた代表的なスペクトルを解析し、プラズマ中の不純物割合の定量的な推定値を提供する。

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