Can Landau-fluid models describe nonlinear Landau damping

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860350· OSTI ID:7192804

Mattor, N ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

The question of whether the Landau-fluid'' description of wave-particle resonances (e.g., Hammett and Perkins, Phys. Rev. Lett. {bold 64}, 3019 (1990)) can describe nonlinear Landau damping is addressed. It is found that this model can provide an adequate description of the Compton scattering of electron drift waves, but fails in the case of ion-temperature-gradient-driven modes near the threshold. The general conclusion is that Landau-fluid models have difficulty describing the dynamics associated with the product of two or more deeply resonant propagators.

• OSTI ID: 7192804
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:12; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
BASIC INTERACTIONS
COMPTON EFFECT
DAMPING
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTRON DRIFT
EQUATIONS
INTERACTIONS
ION TEMPERATURE
KINETIC EQUATIONS
LANDAU DAMPING
SCATTERING
TURBULENCE