Spectrograph of electric field fluctuation in toroidal helical plasma

A. Fujisawa, K. Itoh, A. Shimizu, H. Nakano, S. Ohsima, H. Iguchi, K. Matsuoka, S. Okamura, S. I. Itoh, P. H. Diamond

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


This is a report on fluctuation measurements using twin heavy ion beam probes in CHS. The observation shows that dozens of coherent modes with intermittent nature co-exist in an electron cyclotron heated plasma. The modes are found to have a long-distance correlation in the toroidal direction. The radial structure of the modes is evaluated in potential fluctuation. The characteristics are consistent with those of the geodesic acoustic modes.

Original languageEnglish
Pages (from-to)S31-S39
JournalPlasma Physics and Controlled Fusion
Issue number4
Publication statusPublished - Apr 1 2006

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics


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