Observation of Intermittent Transition by Electrode Biasing in Heliotron J*)

Kosuke Shimizu, Sumio Kitajima, Atsushi Okamoto, Yu Sato, Jo Tachibana, Toshihiro Oku, Masakazu Takayama, Fumimichi Sano, Tohru Mizuuchi, Kazunobu Nagasaki, Hiroyuki Okada, Shinichiro Kado, Shinji Kobayashi, Satoshi Yamamoto, Shinsuke Ohshima, Yasuhiro Suzuki, Masayuki Yokoyama, Hiromi Takahashi

研究成果: Article査読

抄録

We observed intermittent increases in the electrode current in electrode biasing experiments in Heliotron J. In addition, electron density and floating potential showed pulsating behavior associated with the electrode current. The relation between line density and electrode current and that between floating potential and electrode current showed a hysteresis feature in transitions. Then it is evident that the pulsating behavior was the intermittent transition between two distinctive states. We also observed the mode (~10 kHz) that accompanied the pulsating behavior in the power spectrum density of the floating potential and ion saturation current obtained via fast Fourier transform. The electron density gradient increased, and subsequently the power spectrum density of the fluctuation increased.

本文言語English
ページ(範囲)1-4
ページ数4
ジャーナルPlasma and Fusion Research
10
DOI
出版ステータスPublished - 2015

ASJC Scopus subject areas

  • 凝縮系物理学

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