Wave-Particle Decorrelation and Transport of Anisotropic Turbulence in Collisionless Plasmas

Journal Article · Mon Dec 31 00:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.265003· OSTI ID:21028240

Lin, Z; Holod, I; Chen, L; Diamond, P H; Hahm, T S; Ethier, S ^[1]

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1. Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States)

Comprehensive analysis of the largest first-principles simulations to date shows that stochastic wave-particle decorrelation is the dominant mechanism responsible for electron heat transport driven by electron temperature gradient turbulence with extended radial streamers. The transport is proportional to the local fluctuation intensity, and phase-space island overlap leads to a diffusive process with a time scale comparable to the wave-particle decorrelation time, determined by the fluctuation spectral width. This kinetic time scale is much shorter than the fluid time scale of eddy mixing.

• OSTI ID: 21028240
• Journal Information: Physical Review Letters, Vol. 99, Issue 26; Other Information: DOI: 10.1103/PhysRevLett.99.265003; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANISOTROPY
COLLISIONLESS PLASMA
ELECTRON TEMPERATURE
HEAT TRANSFER
PHASE SPACE
PLASMA SIMULATION
STOCHASTIC PROCESSES
TEMPERATURE GRADIENTS
TURBULENCE