Formation Process of a Solitary Vortex in a Zonal Flow – Drift-Wave Dynamics

Hiroyuki Arakawa, Makoto Sasaki, Inagaki Shigeru, Maxime Lesur, Yusuke Kosuga, Tatsuya Kobayashi, Fumiyoshi Kin, Takuma Yamada, Yoshihiko Nagashima, Akihide Fujisawa, Kimitaka Itoh

Research output: Contribution to journalArticlepeer-review


A solitary vortex organization process in drift-wave type fluctuations interacting with the zonal flow was identified experimentally in a linear magnetized plasma. An azimuthal probe array was used to evaluate temporal changes in the amplitude and phase in the density fluctuations. Excitation/damping of the solitary vortex is synchronized with zonal perturbation, and the waveform of drift-wave type fluctuation and its harmonics also changes synchronously. The solitary vortex is formed primarily through the phase modulation of the fundamental drift-wave type fluctuation and its harmonics.

Original languageEnglish
Article number1301106
JournalPlasma and Fusion Research
Publication statusPublished - 2022

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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