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Journal Articles Journal of Plasma and Fusion Research / Purazuma Kaku Yugo Gakkaishi Year : 2022

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

Abstract

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.
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hal-04142354 , version 1 (26-06-2023)

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Hiroyuki Arakawa, Makoto Sasaki, Shigeru Inagaki, Maxime Lesur, Yusuke Kosuga, et al.. Formation Process of a Solitary Vortex in a Zonal Flow - Drift-Wave Dynamics. Journal of Plasma and Fusion Research / Purazuma Kaku Yugo Gakkaishi, 2022, 17, pp.1301106-1301106. ⟨10.1585/pfr.17.1301106⟩. ⟨hal-04142354⟩
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