Long-Time Behavior of Nonlinear Landau Damping

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.2815· OSTI ID:632679

Manfredi, G ^[1]

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1. School of Cosmic Physics, Dublin Institute for Advanced Studies, Dublin 2 (Ireland)

The evolution of an initial perturbation in a collisionless, Maxwellian plasma is studied numerically. Accurate long-time simulations (up to 1600thinspthinspinverse electron plasma frequencies) show that the electric field does not decay to zero, in disagreement with recent analytical results [M. B. Isichenko, Phys. Rev. Lett. {bold 78}, 2369 (1997)]. Instead, after some initial damping, the field amplitude starts to oscillate around an approximately constant value, and the phase-space distribution develops a vortex structure which survives throughout the simulation. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632679
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONLESS PLASMA
DISTRIBUTION
ELECTRIC FIELDS
LANDAU DAMPING
MATHEMATICAL MODELS
NONLINEAR PROBLEMS
NUMERICAL ANALYSIS
OSCILLATIONS
PERTURBATION THEORY
PHASE SPACE
PLASMA SIMULATION
VORTEX FLOW