TY - JOUR
T1 - Formation Process of a Solitary Vortex in a Zonal Flow – Drift-Wave Dynamics
AU - Arakawa, Hiroyuki
AU - Sasaki, Makoto
AU - Shigeru, Inagaki
AU - Lesur, Maxime
AU - Kosuga, Yusuke
AU - Kobayashi, Tatsuya
AU - Kin, Fumiyoshi
AU - Yamada, Takuma
AU - Nagashima, Yoshihiko
AU - Fujisawa, Akihide
AU - Itoh, Kimitaka
N1 - Funding Information:
This article is dedicated to the memory of Prof. Sanae-I. Itoh. This work has been supported by the grant-in-aid for Scientific Research of KAKENHI (Grant Numbers JP17K14897, JP17H06089, JP15H02335, JP15H02155, JP21K03513, JP21K03508 and JP21K03509), by the Collaborative Research Programme of Research Institute for Applied Mechanics, Kyushu University, by the Shimadzu Science Foundation, by the NIFS Collaboration Research program (NIFS17KOCH002), by the Agence Nationale de la Recherche for the project GRANUL (ANR-19-CE30-0005) and by the Asada Science Foundation.
Publisher Copyright:
© 2022 The Japan Society of Plasma Science and Nuclear Fusion Research
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85156250672&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85156250672&partnerID=8YFLogxK
U2 - 10.1585/pfr.17.1301106
DO - 10.1585/pfr.17.1301106
M3 - Article
AN - SCOPUS:85156250672
SN - 1880-6821
VL - 17
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - 1301106
ER -