Impact of helium neutral gas puff on plasma turbulence in linear magnetized argon plasmas

T. Kobayashi, F. Kin, Y. Kawachi, M. Sasaki, Y. Kosuga, K. Yamasaki, S. Inagaki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In order to explore the impact of the neutrals on the plasma turbulence, a new gas puff system is developed for a linear magnetized plasma column PANTA. Helium gas is injected into the argon plasma without changing the electron density profile. After the helium gas puff, the dominant fluctuation mode changes from the broadband m = 2 drift wave to the coherent m = 1 mode, where m is the azimuthal mode number. Accordingly, the property of the nonlinear coupling with other fluctuating modes changes from broadband couplings to coherent couplings.

Original languageEnglish
Article number062309
JournalPhysics of Plasmas
Volume27
Issue number6
DOIs
Publication statusPublished - Jun 1 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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