Dynamics of particle flux in a cylindrical magnetized plasma

S. Oldenbürger; Inagaki Shigeru; T. Kobayashi; H. Arakawa; N. Ohyama; K. Kawashima; Y. Tobimatsu; A. Fujisawa; K. Itoh; Sanae Itoh

doi:10.1088/0741-3335/54/5/055002

Dynamics of particle flux in a cylindrical magnetized plasma

S. Oldenbürger, Inagaki Shigeru, T. Kobayashi, H. Arakawa, N. Ohyama, K. Kawashima, Y. Tobimatsu, A. Fujisawa, K. Itoh, Sanae Itoh

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Fluctuation-induced cross-field convective particle flux is studied in the cylindrical magnetized plasma assembly for non-linear turbulence analysis (PANTA). The plasma presents a wave turbulence characterized by a limited number of developing modes. To study the link between mode dynamics and particle transport, frequency-dependent time evolution of transport is obtained by applying complex continuous wavelet decomposition on spatio-temporal data from electrostatic probes. The method is shown to recover transport description consistent with other analysis methods for a weakly turbulent state. For a plasma state featuring a large non-sinusoidal structure, the time evolution of transport on the second harmonic of the main fluctuation shows a slow modulation of azimuthal mode number m=0 with similarities to a zonal perturbation.

Original language	English
Article number	055002
Journal	Plasma Physics and Controlled Fusion
Volume	54
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/54/5/055002
Publication status	Published - May 2012

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/54/5/055002

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abstract = "Fluctuation-induced cross-field convective particle flux is studied in the cylindrical magnetized plasma assembly for non-linear turbulence analysis (PANTA). The plasma presents a wave turbulence characterized by a limited number of developing modes. To study the link between mode dynamics and particle transport, frequency-dependent time evolution of transport is obtained by applying complex continuous wavelet decomposition on spatio-temporal data from electrostatic probes. The method is shown to recover transport description consistent with other analysis methods for a weakly turbulent state. For a plasma state featuring a large non-sinusoidal structure, the time evolution of transport on the second harmonic of the main fluctuation shows a slow modulation of azimuthal mode number m=0 with similarities to a zonal perturbation.",

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AU - Oldenbürger, S.

AU - Shigeru, Inagaki

AU - Kobayashi, T.

AU - Arakawa, H.

AU - Ohyama, N.

AU - Kawashima, K.

AU - Tobimatsu, Y.

AU - Fujisawa, A.

AU - Itoh, K.

AU - Itoh, Sanae

PY - 2012/5

Y1 - 2012/5

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AB - Fluctuation-induced cross-field convective particle flux is studied in the cylindrical magnetized plasma assembly for non-linear turbulence analysis (PANTA). The plasma presents a wave turbulence characterized by a limited number of developing modes. To study the link between mode dynamics and particle transport, frequency-dependent time evolution of transport is obtained by applying complex continuous wavelet decomposition on spatio-temporal data from electrostatic probes. The method is shown to recover transport description consistent with other analysis methods for a weakly turbulent state. For a plasma state featuring a large non-sinusoidal structure, the time evolution of transport on the second harmonic of the main fluctuation shows a slow modulation of azimuthal mode number m=0 with similarities to a zonal perturbation.

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Dynamics of particle flux in a cylindrical magnetized plasma

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