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Article Dans Une Revue Physical Review E Année : 2005

Self-consistent Lagrangian study of nonlinear Landau damping

Résumé

The electric field computed by numerically solving the one-dimensional Vlasov-Poisson system is used to calculate Lagrangian trajectories of particles in the wave-particle resonance region. The analysis of these trajectories shows that, when the initial amplitude of the electric field is above some threshold, two populations of particles are present: a first one located near the separatrix, which performs flights in the phase space and whose trajectories become ergodic and chaotic, and a second population of trapped particles, which displays a nonergodic dynamics. The complex, nonlinear interaction between these populations determines the oscillating long-time behavior of solutions.
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Dates et versions

hal-03742711 , version 1 (09-09-2022)

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Francesco Valentini, Vincenzo Carbone, Pierluigi Veltri, André Mangeney. Self-consistent Lagrangian study of nonlinear Landau damping. Physical Review E , 2005, 71, pp.17402. ⟨10.1103/PhysRevE.71.017402⟩. ⟨hal-03742711⟩
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