Neoclassical transport and poloidal rotation at the l-h transition

G. Gervasini, E. Lazzaro, E. Minardi

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2 Citations (Scopus)

Abstract

We address the question of establishing if, and under what physical and boundary conditions, the neoclassical transport is quantitatively capable of establishing high gradients in a narrow layer at the edge of an auxiliary heated tokamak plasma, and of driving poloidal rotation in the absence of external momentum input and vanishing parallel viscous stress, in a time scale of a few milliseconds. We observe that a torque for poloidal and toroidal acceleration with constant parallel flow is provided by the displacement current at third order of the adiabatic expansion. Combining neoclassical transport with a model of anomalous transport suppression we show the development, during a few milliseconds, of strong gradients in temperature, radial electric field and poloidal rotation at the edge, that are consistent in magnitude and sign with observations. © 1995 IOP Publishing Ltd.
Original languageEnglish
Pages (from-to)417 - 420
Number of pages4
JournalPhysica Scripta
Volume52
Issue number4
DOIs
Publication statusPublished - 1 Oct 1995
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)

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