Linear delta-f simulations of nonlocal electron heat transport

Journal Article · Sat Jul 01 00:00:00 EDT 2000 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.874131· OSTI ID:20216868

Brunner, S ^[1]; Valeo, E ^[1]; Krommes, J A ^[1]

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1. Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543-0451 (United States)

Nonlocal electron heat transport calculations are carried out by making use of some of the techniques developed previously for extending the {delta}f method to transport time scale simulations [S. Brunner, E. Valeo, and J. Krommes, Phys. Plasmas 6, 4504 (1999)]. By considering the relaxation of small amplitude temperature perturbations of an homogeneous Maxwellian background, only the linearized Fokker-Planck equation has to be solved, and direct comparisons can be made with the equivalent, nonlocal hydrodynamic approach [V. Yu. Bychenkov et al., Phys. Rev. Lett. 75, 4405 (1995)]. A quasineutrality-conserving algorithm is derived for computing the self-consistent electric fields driving the return currents. In the low-collisionality regime, results illustrate the importance of taking account of nonlocality in both space and time. (c) 2000 American Institute of Physics.

• OSTI ID: 20216868
• Journal Information: Physics of Plasmas, Vol. 7, Issue 7; Other Information: PBD: Jul 2000; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HEAT TRANSFER
CHARGED-PARTICLE TRANSPORT
ELECTRON TRANSFER
PLASMA SIMULATION
FOKKER-PLANCK EQUATION
HYDRODYNAMICS
ELECTRON TEMPERATURE
THEORETICAL DATA