Spatiotemporal Structure of Hα Emission from the Detached Plasma in GAMMA 10/PDX
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- TANAKA Hirohiko
- Graduate School of Engineering, Nagoya University
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- SAKAMOTO Mizuki
- Plasma Research Center, University of Tsukuba
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- EZUMI Naomichi
- Plasma Research Center, University of Tsukuba
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- TERAKADO Akihiro
- Plasma Research Center, University of Tsukuba
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- NOJIRI Kunpei
- Plasma Research Center, University of Tsukuba
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- MIKAMI Tomohiro
- Plasma Research Center, University of Tsukuba
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- KINOSHITA Yosuke
- Plasma Research Center, University of Tsukuba
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- KOBAYASHI Kaede
- Plasma Research Center, University of Tsukuba
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- YOSHIKAWA Masayuki
- Plasma Research Center, University of Tsukuba
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- KOHAGURA Junko
- Plasma Research Center, University of Tsukuba
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- OHNO Noriyasu
- Graduate School of Engineering, Nagoya University
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Abstract
<p>High-speed camera measurement was performed for analyses of detached plasma fluctuation in the GAMMA 10/PDX tandem mirror device. Significant spectral peaks at frequencies of 1.5 and 3 kHz were observed to have several local maxima along the vertical, near the entrance of the V-shaped target. Wavelet analysis indicated that 1.5- and 3-kHz fluctuations became non-simultaneously strong. Their phase relationships demonstrated inversion-symmetric and symmetric features with respect to the midplane. Such spectral patterns were interpreted as the line-integral of odd- and even-mode structures. It is suspected that the vertical edge part was due to radially elongated structures with an azimuthal phase shift.</p>
Journal
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- Plasma and Fusion Research
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Plasma and Fusion Research 14 (0), 2402036-2402036, 2019-02-12
The Japan Society of Plasma Science and Nuclear Fusion Research
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Details
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- CRID
- 1390845713059885440
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- NII Article ID
- 130007633118
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- NII Book ID
- AA12346675
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- ISSN
- 18806821
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- HANDLE
- 2241/00157922
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed