Long time simulation of a beam in a periodic focusing channel via a two-scale PIC-method
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beamtimelongsimulationtwo-scaleactionasymptoticasymptotics
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We study the two-scale asymptotics for a charged beam under the action of a rapidly oscillating external electric field. After proving the convergence to the correct asymptotic state, we develop a numerical method for solving the limit model involving two time scales and validate its efficiency for the simulation of long time beam evolution.
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