Plasma and Fusion Research

Volume 12, 1401019 (2017)

Regular Articles

Phenomenological Classification of Turbulence States in Linear Magnetized Plasma PANTA
Tatsuya KOBAYASHI1), Sigeru INAGAKI2,3), Makoto SASAKI2,3), Yusuke KOSUGA2,3,4), Hiroyuki ARAKAWA5), Fumiyoshi KIN6), Takuma YAMADA3,7), Yoshihiko NAGASHIMA2,3), Naohiro KASUYA2,3), Akihide FUJISAWA2,3), Sanae-I. ITOH2,3) and Kimitaka ITOH1,3)
1)
National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
2)
Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan
3)
Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan
4)
Institute for Advanced Study, Kyushu University, Fukuoka 812-8581, Japan
5)
Teikyo University, Omuta 836-8505, Japan
6)
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
7)
Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
(Received 11 March 2017 / Accepted 25 March 2017 / Published 16 May 2017)

Abstract

Changing the experimental conditions such as the neutral pressure and the magnetic field strength provides a drastic change in the turbulence states in linear magnetized helicon plasmas. In order to define the turbulence states and their occurrence region a throughout parameter scan in the two-dimensional parameter space was performed. The classification of the turbulence states is carried out phenomenologically based on the turbulence spectrum and the waveform.

Keywords

turbulence, linear magnetized plasma, drift wave, structure formation, nonlinear coupling

DOI: 10.1585/pfr.12.1401019

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