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Influx and sources of medium- and high-Z intrinsic impurities in the alcator C tokamak

J.E. Rice, E.S. Marmar, B. Lipschultz, J.L. Terry1984年被引用 14Nuclear FusionIF 3出版社

The influx of heavy impurities in the Alcator C tokamak is determined as a function of plasma parameters from observations of intrinsic impurities, in conjunction with an empirically derived anomalous impurity diffusion model. The influx of molybdenum as a function of electron density is found to decrease dramatically as the electron density is raised above 1 × 1014 cm−3. Sputtering (by neutrals, ions and impurities) is probably the dominant molybdenum release mechanism in Ohmically heated discharges.

日本語訳

アルカトールCトカマクにおける重不純物の流入は、内在不純物の観測から、経験的に導出された異常不純物拡散モデルと組み合わせて、プラズマパラメータの関数として決定される。モリブデンの流入は、電子密度の関数として、電子密度が1 × 10¹⁴ cm⁻³を超えて上昇すると劇的に減少することが見出された。スパッタリング(中性粒子、イオン、および不純物による)は、オーミック加熱放電におけるモリブデンの主要な放出機構である可能性が高い。

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