Dynamic interaction between fluctuations with different origins in a linear magnetized plasma

Y. Kawachi, Inagaki Shigeru, Makoto Sasaki, Y. Kosuga, K. Yamasaki, T. Kobayashi, F. Kin, Takuma Yamada, H. Arakawa, Yoshihiko Nagashima, Chanho Moon, N. Kasuya, A. Fujisawa

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents the experimental identification of the dynamic interaction between three fluctuations excited by different thermodynamical forces in a linear plasma. The observed fluctuations are characterized as an axial symmetric mode, a drift wave, and an azimuthally symmetric potential fluctuation from the spatiotemporal structures measured with Langmuir probe arrays. The intermittent burst of the axial symmetric mode is observed by the instantaneous wave number spectrum. The energy transfer analysis revealed that the axially symmetric mode gains energy from the other mode during the burst while the drift wave loses energy. The intermittent burst synchronizes with the azimuthal symmetric potential fluctuation.

Original languageEnglish
Article number112302
JournalPhysics of Plasmas
Volume28
Issue number11
DOIs
Publication statusPublished - Nov 1 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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