Short-time dynamics in presence of wave-particles interactions: a perturbative approach

Details Short-time dynamics in presence of wave-particles interactions: a perturbative approach Short-time dynamics in presence of wave-particles interactions: a perturbative approach

2007-07-11

arxiv.org/abs/0707.1650v1

Physics

Mathematical Physics

12 pages, 6 figures

Scientific paper

The self-consistent interaction between a beam of charged particles and a wave is considered, within a Vlasov picture. The model is discussed with reference to the case of a Free Electron Laser. Starting with a spatially bunched waterbag distribution, we derive, via perturbative methods, closed analytical expressions for the time evolution of the main macroscopic observables. Predictions of the theory are shown to agree with direct numerical simulations.

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