Evaluation of radial particle flux profile based on atomic hydrogen density measurements using laser induced fluorescence and emission at Halpha

H. Takenaga, T. Nakao, K. Uchino, K. Muraoka, M. Maeda, H. Iguchi, K. Ida, I. Yamada, S. Okamura, H. Yamada, S. Morita, C. Takahashi, K. Matsuoka

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)

抄録

Local atomic hydrogen densities inside plasmas of the Compact Helical System (CHS) were measured using laser induced fluorescence tuned to H α, and the results were compared with those calculated using a neutral particle simulation code, in order to determine the penetration energy of hydrogen atoms from the chamber wall into the plasma. The results of these and supplementary measurements of Hα emission intensities using CCD cameras and photomultipliers at various toroidal positions yielded local atomic hydrogen density distributions throughout the whole plasma. The distribution of the particle source rate was evaluated from the atomic hydrogen distribution, and then the radial particle flux profile was obtained from a particle continuity equation. Estimated errors for the latter were ±30% at an absolute level and several per cent in the profile shape. The radial particle flux thus obtained is valuable for evaluations of particle diffusion coefficient and convection velocity.

本文言語英語
論文番号I09
ページ(範囲)107-111
ページ数5
ジャーナルNuclear Fusion
35
1
DOI
出版ステータス出版済み - 12月 1 1995

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 凝縮系物理学

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