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Updated: Aug 2, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Interaction between small-scale zonal flows and large-scale turbulence: a theory for ion transport intermittency in
1Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, Naka, Ibaraki 311-0193, Japan. jqli@fusion.naka.jaeri.go.jp
Abstract:
Interaction between small-scale zonal flows and large-scale turbulence is investigated. The key mechanism is identified as radially nonlocal mode coupling. Fluctuating energy can be nonlocally transferred from the unstable longer to the stable or damped shorter wavelength region, so that the turbulence spectrum is seriously deformed and deviates from the nonlinear power law structure. Three-dimensional gyrofluid ion-temperature gradient (ITG) turbulence simulations show that an ion transport bursting behavior is consistently linked to the spectral deformity with the causal role of ITG-generated zonal flows in tokamak plasmas.
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