Impurity behaviour in LHD long pulse discharges

Y. Nakamura, Y. Takeiri, B. J. Peterson, S. Muto, K. Ida, H. Funaba, M. Yokoyama, K. Narihara, Y. Nagayama, S. Inagaki, T. Tokuzawa, S. Morita, M. Goto, K. Sato, M. Osakabe, S. Masuzaki, H. Suzuki, R. Kumazawa, T. Mutoh, T. ShimozumaM. Sato, N. Noda, K. Kawahata, N. Ohyabu, O. Motojima

研究成果: Contribution to journalArticle査読

16 被引用数 (Scopus)

抄録

Intrinsic impurity behaviour in neutral beam heated LHD long pulse discharges with a discharge duration of 10 s was investigated. Spectroscopic and bolometric measurements showed a remarkable temporal increase of core radiation due to metallic impurities. Central impurity accumulation was found in a narrow plasma density region (n̄e = 1-3 × 1019 m-3) for both density ramp-up discharges and constant density discharges. In the density ramp-up discharges, high-Z impurities were accumulated in the low-density region and diffused out from the core plasma in the high-density region. The impurity behaviour was compared with neoclassical predictions.

本文言語英語
ページ(範囲)2121-2134
ページ数14
ジャーナルPlasma Physics and Controlled Fusion
44
10
DOI
出版ステータス出版済み - 10 1 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • 原子力エネルギーおよび原子力工学
  • 凝縮系物理学

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