Nonlocal heat transport in plasmas down steep temperature gradients

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859581· OSTI ID:6638798

Minotti, F; Fontan, C F ^[1]

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1. Laboratorio de F isica del Plasma Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. I, 1428 Buenos Aires (Argentina)

An analytic solution to the problem of nonlocal heat transport in plasmas by electrons whose range is not short compared to the temperature scale length is presented. The formalism extends the results of Albritton {ital et} {ital al}. (Phys. Rev. Lett. {bold 57}, 1887 (1986)) to an arbitrary ionization state {ital Z}. This simple transport scheme is checked against recent experiments in the AURORA device (Phys. Fluids B {bold 1}, 741 (1989)). The agreement, both for the measured cold electron temperature profile and the plasma potential, is very good and comparable to the result of full kinetic calculations.

• OSTI ID: 6638798
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 2:8; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
ANALYTICAL SOLUTION
COLD PLASMA
COLLISIONAL PLASMA
CORRELATIONS
DISTRIBUTION FUNCTIONS
ENERGY TRANSFER
FUNCTIONS
HEAT TRANSFER
LEGENDRE POLYNOMIALS
PLASMA
POLYNOMIALS
TEMPERATURE GRADIENTS