Noncircular triangularity and ellipticity-induced alfvén eigenmodes observed in JT-60U

G. J. Kramer, M. Saigusa, T. Ozeki, Y. Kusama, H. Kimura, T. Oikawa, K. Tobita, G. Y. Fu, C. Z. Cheng

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

For the first time noncircular triangularity induced Alfvén eigenmodes (NAE) were observed in combined ion cyclotron resonance frequency and neutral beam injection heated plasmas. Ellipticity induced Alfvén eigenmodes (EAE) and toroidicity-induced Alfvén eigenmodes (TAE) were also observed in those plasmas. The threshold beta of the energetic ions for exciting the NAE modes was found to be similar to that for exciting TAE modes.

Original languageEnglish
Pages (from-to)2594-2597
Number of pages4
JournalPhysical review letters
Volume80
Issue number12
DOIs
Publication statusPublished - 1998 Jan 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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