Detection of cascading in driftwave turbulence using probe array in linear plasmas

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

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Abstract

Measurement of drift wave turbulence using multi-probe systems was performed in the Large Mirror Device- Upgrade linear plasma. We compared a drift wave's two-dimensional (poloidal wave number and frequency) power spectrum with its calculated linear dispersion relation. As a result, a few wave modes that satisfy the linear dispersion relation were observed. Moreover, cascades to non-mode peaks and broadband components that do not satisfy the dispersion relation were identified.

Original languageEnglish
Article number051
JournalPlasma and Fusion Research
Volume2
DOIs
Publication statusPublished - Jan 1 2007

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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