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Radiated energy and impurity density changes during intensive hydrogen influx in the PLT tokamak

E. Hinnov, J. Hosea, H. Hsuan, F. Jobes, E. Meservey, G. Schmidt, S. Suckewer1982年被引用 20Nuclear FusionIF 3出版社

During a discharge a puff of hydrogen is admitted, sufficient to more than triple the plasma density, and the resulting changes in various plasma parameters are determined. The absolute densities of various wall and limiter (carbon) materials are found to decrease by a substantial fraction, probably as a result of lowered peripheral temperature. The radiation pattern deduced from spectroscopically determined plasma composition is in good quantitative agreement with direct bolometric measurements. In the interior of the discharge, radiation constitutes only a small part of the power input. Neither the radiated power nor the power input changes very markedly as a result of the density rise, since the effects of temperature and plasma composition changes tend to compensate each other.

日本語訳

放電中に水素のパフが導入され、プラズマ密度を3倍以上に増加させるのに十分な量とし、その結果生じる様々なプラズマパラメータの変化が測定された。様々な壁材料およびリミッター(炭素)材料の絶対密度は、おそらく周辺部温度の低下の結果として、かなりの割合で減少することが見出された。分光学的に決定されたプラズマ組成から推定された放射パターンは、直接的なボロメトリ測定と定量的に良く一致する。放電の内部では、放射は入力パワーのごく一部のみを構成する。放射パワーも入力パワーも、密度上昇の結果として顕著に変化することはない。これは、温度とプラズマ組成の変化の影響が互いに打ち消し合う傾向があるためである。

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