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Light impurity transport in the TFR tokamak: Comparison of oxygen and carbon line emission with numerical simulations

TFR Group1982年被引用 35Nuclear FusionIF 3出版社

Space- and time-resolved emission studies of oxygen and carbon ions are reported for high-density TFR discharges (ne (0) ∼ 1 – 1.5×1014 cm−3). The experimental data show that ions of low ionization potential (up to O5+) are very sensitive to local peripheral phenomena. Radial emissivity profiles of the resonance lines of H-like and He-like ions have been used to study the impurity ion transport by comparison with a numerical simulation code, including anomalous diffusion coefficients (of the order of a few thousand cm2 · s−1). Quantitative comparison (when possible) with the resistive effective charge Zeff was always satisfactory, whereas in some cases disagreement was found with the bolometric radiated power.

日本語訳

高密度TFR放電(ne(0) ∼ 1 – 1.5×10^14 cm−3)における酸素イオンおよび炭素イオンの空間・時間分解発光測定について報告する。実験データは、低電離ポテンシャル(O5+まで)のイオンが局所的な周辺現象に非常に敏感であることを示している。水素様およびヘリウム様イオンの共鳴線の動径放射率プロファイルを用いて、異常拡散係数(数千 cm2·s−1 のオーダー)を含む数値シミュレーションコードとの比較により、不純物イオン輸送を研究した。抵抗性実効電荷 Zeff との定量的比較は(可能な場合)常に満足のいくものであったが、ボロメトリック放射電力とはいくつかの場合に不一致が見られた。

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ImpurityImpurity transportTFR
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