Observation of edge reynolds stress increase preceding an L-H transition in compact helical system

Yoshihiko Nagashima, Kenichi Nagaoka, Kimitaka Itoh, Akihide Fujisawa, Mitsutaka Isobe, Tsuyoshi Akiyama, Chihiro Suzuki, Shin Nishimura, Yasuo Yoshimura, Keisuke Matsuoka, Shoichi Okamura, Yuichi Takase, Akira Ejiri, Sanae I. Itoh, Masatoshi Yagi, Chs Group

Research output: Contribution to journalArticle


An increase in turbulent Reynolds stress preceding an L-H transition in the Compact Helical System (CHS) was observed. A positive increase in the Reynolds stress is associated with a negative jump in the floating potential. The relationship of signs is consistent with the momentum balance equation. Therefore, this observation supports the hypothesis that the Reynolds stress plays an important role in triggering the L-H transition in CHS plasmas.

Original languageEnglish
Article number022
JournalPlasma and Fusion Research
Publication statusPublished - Jan 1 2010


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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