[Table of Contents]

Plasma and Fusion Research

Volume 5, S2046 (2010)

Regular Articles

ECRH Superposition on Linear Cylindrical Helicon Plasma in the LMD-U
Kunihiro KAMATAKI, Sanae-I. ITOH, Shigeru INAGAKI, Hiroyuki ARAKAWA1), Yoshihiko NAGASHIMA2), Takuma YAMADA2), Masatoshi YAGI, Akihide FUJISAWA and Kimitaka ITOH3)
Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
1)
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoak 816-8580, Japan
2)
Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
3)
National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
(Received 7 December 2009 / Accepted 13 April 2010 / Published 10 December 2010)

Abstract

Electron cyclotron resonance heating (ECRH) is superimposed on a linear cylindrical helicon plasma in the Large Mirror Device-Upgrade (LMD-U) to study the fluctuation characteristics of high density helicon plasma with/without ECRH injection. The radial profiles of electron density and electron temperature rose by < 10 %, and the drift wave frequency decreased with the ECRH injection. Bicoherence analysis reveals that the nonlinear interaction between drift waves and broad frequency band components exists with or without ECRH injection.

Keywords

ECRH superposition, helicon plasma, drift wave, turbulence, linear cylindrical device

DOI: 10.1585/pfr.5.S2046

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This paper may be cited as follows:

Kunihiro KAMATAKI, Sanae-I. ITOH, Shigeru INAGAKI, Hiroyuki ARAKAWA, Yoshihiko NAGASHIMA, Takuma YAMADA, Masatoshi YAGI, Akihide FUJISAWA and Kimitaka ITOH, Plasma Fusion Res. 5, S2046 (2010).