title: Preventing the recurrence effect in the Vlasov simulation by randomizing phase-point velocities in phase space.
abstract: The Vlasov equation is simulated by following the characteristics of phase points in phase space. It is shown that by increasing the number of phase points, without enhancing the resolution of phase-space grid, the accuracy of the simulation will be improved. In addition, the phase-point spacing introduces a smaller scale than grid spacing on which fine structures might be more conveniently handled. In order to perform simulation with a large population of phase points, an alternative to the bilinear interpolation scheme is introduced that reduces the number of operations. It is shown that by randomizing initial phase-point velocities, the recurrence effect does not happen. Finally, the standard problem of linear and nonlinear Landau damping will be examined.
authors: Faculty of Physics, Amirkabir University of Technology, P. O. Box 15875-4413, Tehran, Iran. abbasi@aut.ac.ir
authors: H
authors: H
authors: Abbasi
authors: M H
authors: MH
authors: Jenab
authors: H
authors: H
authors: Hakimi Pajouh