Time evolution of power spectrum density in spontaneous transition in cylindrical magnetized plasma

Tatsuya Kobayashi, Shigeru Inagaki, Stella Oldenbürger, Katsuyuki Kawashima, Noriko Ohyama, Yuuki Tobimatsu, Hiroyuki Arakawa, Makoto Sasaki, Yoshihiko Nagashima, Takuma Yamada, Satoru Sugita, Masatoshi Yagi, Naohiro Kasuya, Akihide Fujisawa, Sanae I. Itoh, Kimitaka Itoh

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1 Citation (Scopus)

Abstract

Preliminary observation results are reported for a new discharge regime in the Plasma Assembly for Nonlinear Turbulent Analysis (PANTA), where spontaneous transitions in the equilibrium profile and fluctuation spectra occur. Two different states are defined by using the mean density value. Axial and radial profiles are observed for the two states, and large profile changes are found. The spatiotemporal evolution of the transition front is measured. Changes in the fluctuation spectrum are evaluated using conditional average and lock-in average.

Original languageEnglish
Article number2401054
JournalPlasma and Fusion Research
Volume7
Issue numberSPL.ISS.1
DOIs
Publication statusPublished - Dec 1 2012

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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