Measurement of Edge Density Profiles and Fluctuations in the H-Mode Discharge of the Compact Helical System (CHS) with a Thermal Neutral Lithium Beam Probe

Tomohiro Morisaki, Akio Komori, Kazuo Toi, Akira Ando, Akira Ejiri, Katsumi Ida, Harukazu Iguchi, Yoshinobu Kawai, Keisuke Matsuoka, Shigeru Morita, Osamu Motojima, Kiyohiko Nishimura, Shoichi Okamura, Satoru Sakakibara, Chihiro Takahashi, Kenji Tanaka, Hiroshi Yamada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Simultaneous measurements of electron density and its fluctuations were performed successfully in the CHS edge plasma during the L-H transition with a thermal neutral lithium beam probe. Very rapid formation of edge particle transport barrier within 0.1 msec was observed at the L-H transition, i.e., steepening of the edge electron density profile and reduction of the outward particle flux. The reduction of the fluctuation amplitude was also observed in the edge region, which was thought to be related to the formation of the edge particle transport barrier.

Original languageEnglish
Pages (from-to)133-138
Number of pages6
Journaljournal of the physical society of japan
Volume65
Issue number1
DOIs
Publication statusPublished - 1996

Keywords

  • Edge plasma
  • Edge transport barrier
  • L-H transition
  • Thermal neutral lithium beam probe

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Morisaki, T., Komori, A., Toi, K., Ando, A., Ejiri, A., Ida, K., Iguchi, H., Kawai, Y., Matsuoka, K., Morita, S., Motojima, O., Nishimura, K., Okamura, S., Sakakibara, S., Takahashi, C., Tanaka, K., & Yamada, H. (1996). Measurement of Edge Density Profiles and Fluctuations in the H-Mode Discharge of the Compact Helical System (CHS) with a Thermal Neutral Lithium Beam Probe. journal of the physical society of japan, 65(1), 133-138. https://doi.org/10.1143/JPSJ.65.133