Plasma and Fusion Research

Volume 6, 2406118 (2011)

Regular Articles

Evaluation of Electron Temperature Fluctuations Using Two Different Probe Techniques in Plasma Assembly for Nonlinear Turbulence Analysis (PANTA)
Katsuyuki KAWASHIMA, Yasuhiro MIYOSHI, Stella OLDENBÜRGER1), Shigeru INAGAKI1,2), Hiroyuki ARAKAWA, Yoshihiko NAGASHIMA1,3), Takuma YAMADA1,3), Makoto SASAKI1,2), Tatsuya KOBAYASHI, Kazuya URIU, Satoru SUGITA, Masatoshi YAGI1,2), Naohiro KASUYA1,4), Akihide FUJISAWA1,2), Sanae -I. ITOH1,2) and Kimitaka ITOH1,4)
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
1)
Itoh Research Center for Plasma Turbulence, Kyushu University, Fukuoka 816-8580, Japan
2)
Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan
3)
Graduate School of Frontier Sciences, The University of Tokyo, Tokyo 277-8561, Japan
4)
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 7 December 2010 / Accepted 27 May 2011 / Published 11 August 2011)

Abstract

Electron temperature fluctuations are measured with a rotatable triple probe in PANTA. Effects of fluctuation phase are cancelled by aligning the probe pins in the propagation direction of fluctuations. Evaluated electron temperature fluctuations normalized by average electron temperature are much smaller than normalized density fluctuations and normalized floating potential fluctuations in low electron temperature PANTA plasma. Additionally conditional sampling technique is applied to a single probe measurement.

Keywords

electron temperature fluctuations, triple probe, conditional sampling

DOI: 10.1585/pfr.6.2406118

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References

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This paper may be cited as follows:

Katsuyuki KAWASHIMA, Yasuhiro MIYOSHI, Stella OLDENBÜRGER, Shigeru INAGAKI, Hiroyuki ARAKAWA, Yoshihiko NAGASHIMA, Takuma YAMADA, Makoto SASAKI, Tatsuya KOBAYASHI, Kazuya URIU, Satoru SUGITA, Masatoshi YAGI, Naohiro KASUYA, Akihide FUJISAWA, Sanae -I. ITOH and Kimitaka ITOH, Plasma Fusion Res. 6, 2406118 (2011).