[Table of Contents]

Plasma and Fusion Research

Volume 5, S2045 (2010)

Regular Articles

Plasma Imaging by Using a High-speed Camera in the GAMMA 10 Tandem Mirror
Ryo YONENAGA, Yousuke NAKASHIMA, Nobuhiro NISHINO1), Yuta HIGASHIZONO2), Shinji KOBAYASHI3), Katsuhiro HOSOI, Hiroki OZAWA, Takashi ISHII, Hisato TAKEDA, Hiroyuki SHIDARA and Tsuyoshi IMAI
Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
1)
Graduate school of Engineering, Hiroshima University, Hiroshima 739-8527, Japan
2)
Advanced Fusion Research Center, Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
3)
Institute of Advanced Energy, Kyoto University, Gokasho, Uji 611-0011, Japan
(Received 7 December 2009 / Accepted 11 March 2010 / Published 10 December 2010)

Abstract

The two-dimensional (2-D) image of high temperature plasmas in the GAMMA 10 tandem mirror has been measured at the central-cell by using a high-speed camera. Temporal behavior of visible image in the central-cell was observed with high-speed camera in the experiment of antenna optimization of central-ECRH system. Observed results showed a significant dependence on the position of the central-ECRH antenna. We discuss the characteristics of the fluctuation in the light emission intensity and the correlation with the radial distribution of electron density in the period of ECRH.

Keywords

GAMMA 10, tandem mirror, high-speed camera, visible-light emission, limiter-plasma interaction

DOI: 10.1585/pfr.5.S2045

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This paper may be cited as follows:

Ryo YONENAGA, Yousuke NAKASHIMA, Nobuhiro NISHINO, Yuta HIGASHIZONO, Shinji KOBAYASHI, Katsuhiro HOSOI, Hiroki OZAWA, Takashi ISHII, Hisato TAKEDA, Hiroyuki SHIDARA and Tsuyoshi IMAI, Plasma Fusion Res. 5, S2045 (2010).