Energy confinement time and heat transport in initial neutral beam heated plasmas on the large helical device

H. Yamada, K. Y. Watanabe, S. Sakakibara, S. Murakami, M. Osakabe, O. Kaneko, K. Narihara, K. Tanaka, K. Ida, T. Minami, M. Goto, H. Idei, S. Inagaki, S. Kado, K. Kawahata, A. Komori, S. Kubo, J. Miyazawa, T. Morisaki, S. MoritaH. Nakanishi, S. Ohdachi, N. Ohyabu, Y. Oka, B. J. Peterson, R. Sakamoto, M. Shoji, H. Suzuki, Y. Takeiri, K. Toi, T. Tokuzawa, T. Tsumori, I. Yamada, K. Ohkubo, S. Sudo, K. Yamazaki, O. Motojima, M. Fujiwara

研究成果: Contribution to journalArticle査読

59 被引用数 (Scopus)

抄録

The confinement characteristics of large net-current-free plasmas heated by neutral-beam injection have been investigated in the Large Helical Device (LHD). A systematic enhancement in energy-confinement times from the scaling derived from the medium-sized heliotron/torsatron experiments have been observed, which is attributed to the edge pedestal. The core confinement is scaled with the Bohm term divided by the square root of the gyro radii. The comparative analysis using a dimensionally similar discharge in the Compact Helical System indicates gyro-Bohm dependence in the core and transport improvement in the edge region of LHD plasmas.

本文言語英語
ページ(範囲)1216-1219
ページ数4
ジャーナルPhysical review letters
84
6
DOI
出版ステータス出版済み - 2000
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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