Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma

Yuichi Kawachi, Shigeru Inagaki, Fumiyoshi Kin, Kotaro Yamasaki, Yusuke Kosuga, Makoto Sasaki, Yoshihiko Nagashima, Takuma Yamada, Hiroyuki Arakawa, Naohiro Kasuya, Chanho Moon, Kazunobu Hasamada, Akihide Fujisawa

Research output: Contribution to journalArticle

Abstract

In this paper, we evaluated electron temperature fluctuations by using a conditional sampling and a statistical phase detection method. These methods allow us to reconstruct probe I-V characteristics at each time delay; that is, we can extract electron temperature and ion saturation current fluctuations in high temporal resolution without complex electronic circuits. Our method was applied to two quasi-coherent fluctuations observed in a linear magnetized plasma device, PANTA. We observed spatiotemporal structures of electron temperature and ion saturation current fluctuations. The results revealed the amplitudes and phase relation between electron temperature and density fluctuations.

Original languageEnglish
Article number055011
JournalPlasma Physics and Controlled Fusion
Volume62
Issue number5
DOIs
Publication statusPublished - May 2020

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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