Observation of zonal flow type oscillation in linear cylindrical ECR plasmas

Kunihiro Kamataki, Sanae I. Itoh, Yoshihiko Nagashima, Shigeru Inagaki, Shunjiro Shinohara, Masatoshi Yagi, Takuma Yamada, Yoshinobu Kawai, Akihide Fujisawa, Kimitaka Itoh

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


Zonal flow type oscillation, which is driven by a small modulation of the electron cyclotron resonance (ECR) power in a low-frequency band (< 0.1 kHz), and its impact on drift wave turbulence are observed in linear cylindrical ECR plasmas by simultaneous spatiotemporal measurements with a multi-ring probe array. It is found that a potential low-frequency (< 0.1 kHz) oscillation can have a zonal flow type structure. Bicoherence analysis reveals that this zonal flow type oscillation has a nonlinear interaction with the drift mode. These results indicate that an electric field with zonal flow, which is excited externally, can modulate the drift mode amplitude, similar to spontaneous zonal flow.

ジャーナルPlasma and Fusion Research
出版ステータス出版済み - 2008

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学


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