Neoclassical nature of the radial electric field at the low-to-high confinement transition

T.P. Kiviniemi (Corresponding Author), S.K. Sipilä, V.A. Rozhansky, S.P. Voskoboynikov, E.G. Kaveeva, J.A. Heikkinen, D.P. Coster, R. Schneider, X. Bonnin

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

The radial electric field Er at the tokamak plasma edge is simulated both with a two-dimensional (2D) fluid code solving the most complete system of transport equations and with five-dimensional (three-dimensional in configuration space and 2D in velocity space) Monte Carlo particle following code. At low to high confinement transition conditions, the Er×B shearing rate is found to be high enough for turbulence suppression even though the field is essentially neoclassical. Here, B is the magnetic field. No bifurcation of Er is found.
Original languageEnglish
Pages (from-to)2604-2607
JournalPhysics of Plasmas
Volume10
Issue number6
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • plasma
  • plasma toroidal confinement
  • plasma boundary layers
  • Monte Carlo method
  • Monte Carlo
  • plasma transport processes
  • plasma turbulence
  • electric fields

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