Detection of Cascading in Drift Wave Turbulence Using Probe Array in Linear Plasmas

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 m...

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Bibliographic Details
Published in:Plasma and Fusion Research 2007, Vol.2, pp.051-051
Main Authors: YAMADA, Takuma, ITOH, Sanae -I., MARUTA, Takashi, SHINOHARA, Shunjiro, KASUYA, Naohiro, NAGASHIMA, Yoshihiko, YAGI, Masatoshi, TERASAKA, Kenichiro, KAWAGUCHI, Masato, INAGAKI, Shigeru, KAWAI, Yoshinobu, FUKAO, Masayuki, FUJISAWA, Akihide, ITOH, Kimitaka
Format: Article
Language:English
Subjects:
broadband fluctuation
cascading process
drift wave
linear plasma
non-mode excitation
turbulence
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Summary: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.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.2.051