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Non-Gaussian properties of global momentum and particle fluxes in a cylindrical laboratory plasma

  • Author(s): Nagashima, Y
  • Itoh, SI
  • Inagaki, S
  • Arakawa, H
  • Kasuya, N
  • Fujisawa, A
  • Kamataki, K
  • Yamada, T
  • Shinohara, S
  • Oldenbürger, S
  • Yagi, M
  • Takase, Y
  • Diamond, PH
  • Itoh, K
  • et al.

Published Web Location

https://doi.org/10.1063/1.3601767Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License
Abstract

Non-Gaussian statistical properties of the azimuthally averaged momentum and particle fluxes driven by turbulence have been simultaneously observed in inhomogeneous magnetized plasmas for the first time. We identified the stretched Gaussian distribution of the both fluxes and the transition from the point-wise distribution to averaged ones was confirmed. The change of the particle flux precedes that of the momentum flux, demonstrating that the momentum flux is induced by the relaxation of density gradient. © 2011 American Institute of Physics.

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