Determination of Spatiotemporal Structure of Fluctuations by Statistical Averaging Method

Yuichi KAWACHI; Sigeru INAGAKI; Kentaro TOMITA; Kotaro YAMASAKI; Fumiyoshi KIN; Yusuke KOSUGA; Makoto SASAKI; Yoshihiko NAGASHIMA; Naohiro KASUYA; Kazunobu HASAMADA; Boyu ZHANG; Akihide FUJISAWA

doi:10.1585/pfr.13.3401105

Regular Articles

Determination of Spatiotemporal Structure of Fluctuations by Statistical Averaging Method

Yuichi KAWACHI, Sigeru INAGAKI, Kentaro TOMITA, Kotaro YAMASAKI, Fumiyoshi KIN, Yusuke KOSUGA, Makoto SASAKI, Yoshihiko NAGASHIMA, Naohiro KASUYA, Kazunobu HASAMADA, Boyu ZHANG, Akihide FUJISAWA

Author information

Yuichi KAWACHI
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Sigeru INAGAKI
Research Center for Plasma Turbulence, Kyushu University
Research Institution for Applied Mechanics, Kyushu University
Kentaro TOMITA
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Kotaro YAMASAKI
Research Center for Plasma Turbulence, Kyushu University
Fumiyoshi KIN
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Yusuke KOSUGA
Research Center for Plasma Turbulence, Kyushu University
Research Institution for Applied Mechanics, Kyushu University
Makoto SASAKI
Research Center for Plasma Turbulence, Kyushu University
Research Institution for Applied Mechanics, Kyushu University
Yoshihiko NAGASHIMA
Research Center for Plasma Turbulence, Kyushu University
Research Institution for Applied Mechanics, Kyushu University
Naohiro KASUYA
Research Center for Plasma Turbulence, Kyushu University
Research Institution for Applied Mechanics, Kyushu University
Kazunobu HASAMADA
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Boyu ZHANG
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
Akihide FUJISAWA
Research Center for Plasma Turbulence, Kyushu University
Research Institution for Applied Mechanics, Kyushu University

Keywords: non-linear wave, plasma turbulence, conditional averaging, phase tracking, spatiotemporal structure

JOURNAL FREE ACCESS

2018 Volume 13 Pages 3401105

DOI https://doi.org/10.1585/pfr.13.3401105

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Abstract

Spatiotemporal structure of fluctuation with 11 kHz excited in a linear magnetized plasma was observed in details by applying pattern recognition method based on statistical averaging. Statistical behaviors of instantaneous period of the fluctuation and the temporal behavior of the radial profile of the fluctuation are clarified. Two-dimensional structure of the fluctuation is reconstructed and distortion of the wave-front of the fluctuation was inferred.

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