1. Identification of trapping finer-scale fluctuations in a solitary vortex in linear magnetized plasma.
- Author
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Arakawa, Hiroyuki, Sasaki, Makoto, Inagaki, Shigeru, Lesur, Maxime, Kosuga, Yusuke, Kobayashi, Tatsuya, Kin, Fumiyoshi, Yamada, Takuma, Nagashima, Yoshihiko, Fujisawa, Akihide, and Itoh, Kimitaka
- Abstract
The mutual interaction of drift wave-type modes and zonal flows causes the formation of higher-order nonlinear structures. This study focuses on the spatio-temporal behavior of these higher-order structures in a linear magnetized plasma. The structures include a solitary vortex, a long-lived circumnavigating motion localized both radially and azimuthally, and a short-lived packet of finer-scale fluctuations excited at the position of the solitary vortex. Observing the time evolution of the two-dimensional cross-sectional structures revealed that the packet of finer-scale fluctuations is trapped in the solitary vortex. The trapping times found are consistent with the theoretical evaluation. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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