Spatiotemporal behavior of driftwaves in LMD-U

Takuma Yamada, Sanae I. Itoh, Kenichiro Terasaka, Naohiro Kasuya, Yoshihiko Nagashima, Shunjiro Shinohara, Takashi Maruta, Masatoshi Yagi, Shigeru Inagaki, Yoshinobu Kawai, Akihide Fujisawa, Kimitaka Itoh

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

In the LMD-U linear magnetized plasma, fluctuation measurements have been performed with multi-channel poloidal Langmuir probe arrays to investigate the spatiotemporal behaviors of drift wave turbulence. Twodimensional (poloidal mode number-frequency) power spectrum showed not only fluctuation peaks but also the existence of a broadband fluctuation. The broadband fluctuation developed at high poloidal mode number and high frequency regions and not along the linear dispersion relation curve of drift wave modes. It showed shorter correlation time and poloidal length than the peaked fluctuations. Two-dimensional axial coherence was measured with two poloidal probe arrays separated in the axial direction. The axial coherence was strong for both the broadband fluctuation and peak fluctuations, suggesting the quasi-two-dimensional structure of the drift wave turbulence.

元の言語英語
記事番号S1021
ジャーナルPlasma and Fusion Research
3
DOI
出版物ステータス出版済み - 1 1 2008

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broadband
turbulence
electrostatic probes
power spectra
probes
curves

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

これを引用

Spatiotemporal behavior of driftwaves in LMD-U. / Yamada, Takuma; Itoh, Sanae I.; Terasaka, Kenichiro; Kasuya, Naohiro; Nagashima, Yoshihiko; Shinohara, Shunjiro; Maruta, Takashi; Yagi, Masatoshi; Inagaki, Shigeru; Kawai, Yoshinobu; Fujisawa, Akihide; Itoh, Kimitaka.

:: Plasma and Fusion Research, 巻 3, S1021, 01.01.2008.

研究成果: ジャーナルへの寄稿記事

Yamada, Takuma ; Itoh, Sanae I. ; Terasaka, Kenichiro ; Kasuya, Naohiro ; Nagashima, Yoshihiko ; Shinohara, Shunjiro ; Maruta, Takashi ; Yagi, Masatoshi ; Inagaki, Shigeru ; Kawai, Yoshinobu ; Fujisawa, Akihide ; Itoh, Kimitaka. / Spatiotemporal behavior of driftwaves in LMD-U. :: Plasma and Fusion Research. 2008 ; 巻 3.
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AU - Itoh, Sanae I.

AU - Terasaka, Kenichiro

AU - Kasuya, Naohiro

AU - Nagashima, Yoshihiko

AU - Shinohara, Shunjiro

AU - Maruta, Takashi

AU - Yagi, Masatoshi

AU - Inagaki, Shigeru

AU - Kawai, Yoshinobu

AU - Fujisawa, Akihide

AU - Itoh, Kimitaka

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