Plasma and Fusion Research
Volume 5, 023 (2010)
Rapid Communications
- Faculty of Science, The University of Tokyo, Tokyo 113-0033, Japan
- 1)
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
- 2)
- Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
- 3)
- Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
- 4)
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
Abstract
The amplitudes of electron temperature fluctuations are evaluated in the edge plasma of TST-2 using a new technique. Langmuir probe current-voltage characteristic curves are conditionally reconstituted in terms of the magnitude of the floating potential. High/low electron temperatures are obtained in low/high floating-potential phases. The relationship between the electron temperature fluctuations and the time-averaged electron temperature gradient is discussed.
Keywords
electron temperature fluctuation, edge plasma, spherical tokamak, Langmuir probe
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References
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This paper may be cited as follows:
Jun'ichi OZAKI, Masateru SONEHARA, Yoshihiko NAGASHIMA, Yuichi TAKASE, Akira EJIRI, Kotaro YAMADA, Hidetoshi KAKUDA, Shigeru INAGAKI, Takuya OOSAKO, Byung Il AN, Hiroyuki HAYASHI, Kentaro HANASHIMA, Junichi HIRATSUKA, Hiroaki KOBAYASHI, Hiroki KURASHINA, Takuya SAKAMOTO, Takashi YAMAGUCHI, Osamu WATANABE and Takuma WAKATSUKI, Plasma Fusion Res. 5, 023 (2010).