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Spectrograph of electric field fluctuation in toroidal helical plasma
- Author(s): Fujisawa, A
- Itoh, K
- Shimizu, A
- Nakano, H
- Ohsima, S
- Iguchi, H
- Matsuoka, K
- Okamura, S
- Itoh, SI
- Diamond, PH
- et al.
Published Web Location
https://doi.org/10.1088/0741-3335/48/4/S03Abstract
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. © 2006 IOP Publishing Ltd.
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