Nonlinear Energy Transfer of Drift-Wave Fluctuation in a Cylindrical Laboratory Plasma

Yoshihiko NAGASHIMA; Sanae -I. ITOH; Shunjiro SHINOHARA; Masayuki FUKAO; Akihide FUJISAWA; Kenichiro TERASAKA; Yoshinobu KAWAI; Naohiro KASUYA; Masatoshi YAGI; Shigeru INAGAKI; Takuma YAMADA; Kimitaka ITOH

doi:10.1585/pfr.3.056

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Nonlinear Energy Transfer of Drift-Wave Fluctuation in a Cylindrical Laboratory Plasma

Yoshihiko NAGASHIMA, Sanae -I. ITOH, Shunjiro SHINOHARA, Masayuki FUKAO, Akihide FUJISAWA, Kenichiro TERASAKA, Yoshinobu KAWAI, Naohiro KASUYA, Masatoshi YAGI, Shigeru INAGAKI, Takuma YAMADA, Kimitaka ITOH

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Keywords: drift-wave, Hasegawa-Mima equation, bispectral analysis, nonlinear energy transfer

JOURNAL FREE ACCESS

2008 Volume 3 Pages 056

DOI https://doi.org/10.1585/pfr.3.056

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Abstract

Nonlinear energy transfer of the drift-wave spectrum is investigated experimentally in a cylindrical laboratory plasma. Using the Hasegawa-Mima equation, the nonlinear transfer function of electrostatic potential energy in frequency space is estimated by bispectral analysis. The transfer function derived from the drift-wave spectrum indicates a forward cascading of energy transfer from fundamental to higher harmonic modes.

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