Nonquasilinear evolution of particle velocity in incoherent waves with random amplitudes |
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| Authors: | Yves Elskens |
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| Affiliation: | aPhysique des Interactions Ioniques et Moléculaires, UMR 6633 CNRS–Université de Provence, Aix-Marseille Universités, Equipe Turbulence Plasma, Case 321 Campus Saint-Jérôme, FR-13397 Marseille Cedex 13, France |
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| Abstract: | The one-dimensional motion of N particles in the field of many incoherent waves is revisited numerically. When the wave complex amplitudes are independent, with a Gaussian distribution, the quasilinear approximation is found to always overestimate transport and to become accurate in the limit of infinite resonance overlap. |
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| Keywords: | Weak plasma turbulence Stochastic acceleration Hamiltonian chaos Transport |
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