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

T.P. Kiviniemi; S.K. Sipilä; V.A. Rozhansky; S.P. Voskoboynikov; E.G. Kaveeva; J.A. Heikkinen; D.P. Coster; R.  Schneider; X. Bonnin

doi:10.1063/1.1570827

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

T.P. Kiviniemi^*
, S.K. Sipilä
, V.A. Rozhansky
, S.P. Voskoboynikov
, E.G. Kaveeva
, J.A. Heikkinen
, D.P. Coster
, R. Schneider
, X. Bonnin

^*Corresponding author for this work

VTT Technical Research Centre of Finland

Helsinki University of Technology
St. Petersburg State Technological Institute
Max-Planck-Institut für Plasmaphysik (IPP)

Research output: Contribution to journal › Article › Scientific › peer-review

12 Citations (Scopus)

Abstract

The radial electric field E_rat 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 E^→r×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 E_r is found.

Original language	English
Pages (from-to)	2604-2607
Journal	Physics of Plasmas
Volume	10
Issue number	6
DOIs	https://doi.org/10.1063/1.1570827
Publication status	Published - 2003
MoE publication type	A1 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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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 E→r×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.",

keywords = "plasma, plasma toroidal confinement, plasma boundary layers, Monte Carlo method, Monte Carlo, plasma transport processes, plasma turbulence, electric fields",

author = "T.P. Kiviniemi and S.K. Sipil{\"a} and V.A. Rozhansky and S.P. Voskoboynikov and E.G. Kaveeva and J.A. Heikkinen and D.P. Coster and R. Schneider and X. Bonnin",

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doi = "10.1063/1.1570827",

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TY - JOUR

T1 - Neoclassical nature of the radial electric field at the low-to-high confinement transition

AU - Kiviniemi, T.P.

AU - Sipilä, S.K.

AU - Rozhansky, V.A.

AU - Voskoboynikov, S.P.

AU - Kaveeva, E.G.

AU - Heikkinen, J.A.

AU - Coster, D.P.

AU - Schneider, R.

AU - Bonnin, X.

PY - 2003

Y1 - 2003

N2 - 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 E→r×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.

AB - 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 E→r×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.

KW - plasma

KW - plasma toroidal confinement

KW - plasma boundary layers

KW - Monte Carlo method

KW - Monte Carlo

KW - plasma transport processes

KW - plasma turbulence

KW - electric fields

U2 - 10.1063/1.1570827

DO - 10.1063/1.1570827

M3 - Article

SN - 1070-664X

VL - 10

SP - 2604

EP - 2607

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 6

ER -

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

Abstract

Keywords

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