Anomalous fluxes in the plateau regime for a weakly turbulent, magnetically confined plasma

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859430· OSTI ID:6357383

Balescu, R ^[1]

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1. Physique Statistique et Plasmas, Association Euratom-Etat Belge pour la Fusion, CP 231, Universite Libre de Bruxelles, Campus Plaine, 1050 Bruxelles (Belgium)

The anomalous particle and heat fluxes, together with the parallel electric current, are determined for a confined plasma in the plateau regime in the presence of weak electrostatic drift-wave turbulence. Proper account is taken of nonstationarity and of the finite ion Larmor radius (FLR). The quasineutrality of the drift-wave fluctuations imposes a consistency condition, by which the evaluation of the anomalous fluxes is closely related to the drift-wave dispersion equation. On the other hand, these fluxes are related to the thermodynamic forces via the poloidal fluxes. For the weak turbulence approximation considered here, a unified formulation of the anomalous transport problem has been obtained, including all aspects of neoclassical theory. The complete set of transport coefficients is calculated and various relations between them are exhibited. It clearly appears, for instance, that the anomalous ion heat flux is a pure FLR effect that vanishes as the Larmor radius goes to zero. The Onsager symmetry is broken for anomalous transport. The Appendix is devoted to a general discussion of the concept of heat flux in turbulent plasmas.

• OSTI ID: 6357383
• Journal Information: Physics of Fluids B; (USA), Vol. 2:9; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
HEAT FLUX
DISPERSION RELATIONS
DRIFT INSTABILITY
ELECTROSTATICS
FLUCTUATIONS
IONS
LARMOR RADIUS
MAGNETIC CONFINEMENT
ONSAGER RELATIONS
PARTICLES
PLATEAU REGIME
SYMMETRY BREAKING
TURBULENCE
CHARGED PARTICLES
CONFINEMENT
INSTABILITY
PLASMA CONFINEMENT
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
VARIATIONS
700103* - Fusion Energy- Plasma Research- Kinetics