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Conversion of poloidal flows into toroidal flows by phase space structures in trapped ion resonance driven turbulence

  • Author(s): Kosuga, Y
  • Itoh, SI
  • Diamond, PH
  • Itoh, K
  • et al.
Abstract

A theory to describe the conversion of poloidal momentum into toroidal momentum by phase space structures in trapped ion resonance driven turbulence is presented. In trapped ion resonance driven turbulence, phase space structures are expected to form and can contribute to transport by exerting dynamical friction. Toroidal momentum flux by dynamical friction is calculated. It is shown that dynamical friction exerted on trapped ion granulations can mediate momentum transfer between poloidal and toroidal flows. The conversion coefficient is calculated as measurable, which can be validated in current devices. © 2013 IOP Publishing Ltd.

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