TY - JOUR
T1 - Bispectral analysis of density and potential fluctuations in a high neutral density cylindrical plasma
AU - Kobayashi, Tatsuya
AU - Shigeru, Inagaki
AU - Arakawa, Hiroyuki
AU - Kamataki, Kunihiro
AU - Nagashima, Yoshihiko
AU - Yamada, Takuma
AU - Sugita, Satoru
AU - Yagi, Masatoshi
AU - Kasuya, Naohiro
AU - Fujisawa, Akihide
AU - Itoh, Sanae
AU - Itoh, Kimitaka
N1 - Funding Information:
This work was partly supported by a Grant-in-Aid for Scientific Research (S) from the Japan Society for the Promotion of Science (21224014) and the collaboration programs of RIAM at Kyushu University and the National Institute of Fusion Science (NIFS07KOAP017).
Publisher Copyright:
© 2010 The Japan Society of Plasma Science and Nuclear Fusion Research.
PY - 2010
Y1 - 2010
N2 - The structure of fluctuations in the Large Mirror Device-Upgrade (LMD-U) depends on the neutral density. In this study, we focus on the high neutral density plasma in which the potential and density fluctuation waveforms are nontrigonometric functions similar to sawtooth waves, and peaks in the power spectrum lie along a straight line when plotted as frequency versus wavenumber. Two-dimentional auto and cross bispectral analyses of Ĩis and/or VÃf , which consider both the matching conditions for both the azimuthal wavenumber and the frequency, have been performed; significant couplings are observed at particular peak frequencies. Similarities and differences between the auto and cross bicoherence of Ĩis and/or VÃf are discussed.
AB - The structure of fluctuations in the Large Mirror Device-Upgrade (LMD-U) depends on the neutral density. In this study, we focus on the high neutral density plasma in which the potential and density fluctuation waveforms are nontrigonometric functions similar to sawtooth waves, and peaks in the power spectrum lie along a straight line when plotted as frequency versus wavenumber. Two-dimentional auto and cross bispectral analyses of Ĩis and/or VÃf , which consider both the matching conditions for both the azimuthal wavenumber and the frequency, have been performed; significant couplings are observed at particular peak frequencies. Similarities and differences between the auto and cross bicoherence of Ĩis and/or VÃf are discussed.
UR - http://www.scopus.com/inward/record.url?scp=80054954045&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054954045&partnerID=8YFLogxK
U2 - 10.1585/pfr.5.S2047
DO - 10.1585/pfr.5.S2047
M3 - Article
AN - SCOPUS:80054954045
SN - 1880-6821
VL - 5
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - S2047
ER -