Intermittent Behavior of Local Electron Temperature in a Linear ECR Plasma
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- YOSHIMURA Shinji
- National Institute for Fusion Science
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- TERASAKA Kenichiro
- Interdisciplinary Graduate School of Engineering Science, Kyushu University
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- TANAKA Eiki
- Interdisciplinary Graduate School of Engineering Science, Kyushu University
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- ARAMAKI Mitsutoshi
- College of Industrial Technology, Nihon University
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- TANAKA Masayoshi Y.
- Interdisciplinary Graduate School of Engineering Science, Kyushu University
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Abstract
<p>An intermittent behavior of local electron temperature has been observed in a linear laboratory plasma, where a high-temperature region that has circular cross-section is formed along the magnetic field line for a short period of time. The floating potential signals which contain sporadic large-amplitude negative spikes associated with the electron temperature intermittency are analyzed statistically for various gas discharges. All the probability density functions of waiting time for different gas discharges exhibit exponential distributions, indicating that the random nature of this phenomenon, or the underlying Poisson process, is a universal property. On the other hand,mean duration of the intermittent events depends on the atomic mass of discharge gas species, showing that the dynamics of heavier particles may play an important role in this intermittency.</p>
Journal
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- Plasma and Fusion Research
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Plasma and Fusion Research 10 (0), 3401028-3401028, 2015
The Japan Society of Plasma Science and Nuclear Fusion Research
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Keywords
Details 詳細情報について
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- CRID
- 1390001205255646080
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- NII Article ID
- 130005292428
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- NII Book ID
- AA12346675
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- ISSN
- 18806821
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- HANDLE
- 10655/00013364
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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