Roles of solitary eddy and splash in drift wave-zonal flow system in a linear magnetized plasma

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Abstract

We experimentally investigate the roles of drift wave type fluctuations interacting with zonal flow. The drift wave type fluctuations examined in this paper are characterized by nonlinear solitary wave, splash, and solitary eddy [Arakawa et al., Sci. Rep. 6, 33371 (2016)]. Compared to the nonlinear solitary wave, splash has a short lifetime, while solitary eddy has a long lifetime. Excitation/damping of the splash and the solitary eddy are synchronized with zonal perturbation. The roles of the splash and the solitary eddy in transport processes are also discussed. Solitary eddy contributes to momentum transport and accelerates zonal flow. The particle flux driven by the solitary eddy and the splash is in the inward and outward directions, respectively, with similar magnitudes.

Original languageEnglish
Article number052305
JournalPhysics of Plasmas
Volume26
Issue number5
DOIs
Publication statusPublished - May 1 2019

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vortices
solitary waves
life (durability)
flux (rate)
damping
momentum
perturbation
excitation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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title = "Roles of solitary eddy and splash in drift wave-zonal flow system in a linear magnetized plasma",
abstract = "We experimentally investigate the roles of drift wave type fluctuations interacting with zonal flow. The drift wave type fluctuations examined in this paper are characterized by nonlinear solitary wave, splash, and solitary eddy [Arakawa et al., Sci. Rep. 6, 33371 (2016)]. Compared to the nonlinear solitary wave, splash has a short lifetime, while solitary eddy has a long lifetime. Excitation/damping of the splash and the solitary eddy are synchronized with zonal perturbation. The roles of the splash and the solitary eddy in transport processes are also discussed. Solitary eddy contributes to momentum transport and accelerates zonal flow. The particle flux driven by the solitary eddy and the splash is in the inward and outward directions, respectively, with similar magnitudes.",
author = "H. Arakawa and Makoto Sasaki and Inagaki Shigeru and Yusuke Kosuga and T. Kobayashi and Naohiro Kasuya and Takuma Yamada and Yoshihiko Nagashima and F. Kin and akihide fujisawa and K. Itoh and Itoh, {S. I.}",
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TY - JOUR

T1 - Roles of solitary eddy and splash in drift wave-zonal flow system in a linear magnetized plasma

AU - Arakawa, H.

AU - Sasaki, Makoto

AU - Shigeru, Inagaki

AU - Kosuga, Yusuke

AU - Kobayashi, T.

AU - Kasuya, Naohiro

AU - Yamada, Takuma

AU - Nagashima, Yoshihiko

AU - Kin, F.

AU - fujisawa, akihide

AU - Itoh, K.

AU - Itoh, S. I.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - We experimentally investigate the roles of drift wave type fluctuations interacting with zonal flow. The drift wave type fluctuations examined in this paper are characterized by nonlinear solitary wave, splash, and solitary eddy [Arakawa et al., Sci. Rep. 6, 33371 (2016)]. Compared to the nonlinear solitary wave, splash has a short lifetime, while solitary eddy has a long lifetime. Excitation/damping of the splash and the solitary eddy are synchronized with zonal perturbation. The roles of the splash and the solitary eddy in transport processes are also discussed. Solitary eddy contributes to momentum transport and accelerates zonal flow. The particle flux driven by the solitary eddy and the splash is in the inward and outward directions, respectively, with similar magnitudes.

AB - We experimentally investigate the roles of drift wave type fluctuations interacting with zonal flow. The drift wave type fluctuations examined in this paper are characterized by nonlinear solitary wave, splash, and solitary eddy [Arakawa et al., Sci. Rep. 6, 33371 (2016)]. Compared to the nonlinear solitary wave, splash has a short lifetime, while solitary eddy has a long lifetime. Excitation/damping of the splash and the solitary eddy are synchronized with zonal perturbation. The roles of the splash and the solitary eddy in transport processes are also discussed. Solitary eddy contributes to momentum transport and accelerates zonal flow. The particle flux driven by the solitary eddy and the splash is in the inward and outward directions, respectively, with similar magnitudes.

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