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Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma
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Plasma Physics and Controlled Fusion
PAPER • THE FOLLOWING ARTICLE ISOPEN ACCESS
Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma
Yuichi Kawachi1, Shigeru Inagaki2,3, Fumiyoshi Kin4, Kotaro Yamasaki3, Yusuke Kosuga2,3, Makoto Sasaki2,3, Yoshihiko Nagashima2,3, Takuma Yamada2,5, Hiroyuki Arakawa6, Naohiro Kasuya2,3, Chanho Moon2,3, Kazunobu Hasamada1 and Akihide Fujisawa2,3Hide full author list
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Author affiliations
1 Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580,Japan
2 Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
3 Research Institution for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
4 National Institutes for Quantum and Radiological Science and Technology, Naka 311-0193, Japan
5 Faculty of Arts and Science, Kyushu University, Fukuoka, 819-0395, Japan
Dates
Received 22 December 2019
Accepted 19 March 2020
Published 13 April 2020
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Peer review information
Method: Single-blind
Revisions: 2
Screened for originality? Yes
Citation
Yuichi Kawachi et al 2020 Plasma Phys. Control. Fusion 62 055011
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DOI
https://doi.org/10.1088/1361-6587/ab8132
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Abstract
In this paper, we evaluated electron temperature fluctuations by using a conditional sampling and a statistical phase detection method. These methods allow us to reconstruct probe I − V characteristics at each time delay; that is, we can extract electron temperature and ion saturation current fluctuations in high temporal resolution without complex electronic circuits. Our method was applied to two quasi-coherent fluctuations observed in a linear magnetized plasma device, PANTA. We observed spatiotemporal structures of electron temperature and ion saturation current fluctuations. The results revealed the amplitudes and phase relation between electron temperature and density fluctuations.
Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma
