Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Regular Articles
Streamer Structures in Experiment and Modeling
Takuma YAMADAMakoto SASAKINaohiro KASUYAYoshihiko NAGASHIMAShigeru INAGAKITatsuya KOBAYASHIMasatoshi YAGIAkihide FUJISAWASanae-I. ITOHKimitaka ITOH
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2013 Volume 8 Pages 2401022

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Abstract

Validation of modeling in meso-scale structure formation is undergoing by using multi-channel probe measurements and advanced analyzing techniques such as bispectrum. Study of meso-scale structures including streamers is important for understanding anomalous transports in magnetized plasmas. A streamer structure and its mediator mode were observed in the Large Mirror Device-Upgrade linear plasma. The mediator mode nonlinearly coupled with many other drift wave modes and generated a streamer structure by phase locking. The radial biphase profiles indicating the phase locking showed the radial elongation of the streamer structure. Modes having similar characteristics to the mediator were also found in a theoretical work based on the Hasegawa-Mima model and a numerical simulation code.

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© 2013 by The Japan Society of Plasma Science and Nuclear Fusion Research
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