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- W2006475989 abstract "The time scale of conventional particle simulation methods is limited by electron dynamics to time steps Δt which satisfy the conditions ωpΔt « 1, gWΔt « 1 and kmaxvmaxΔt « 1, where ωp is the electron plasma frequency, Ω is the electron cyclotron frequency, kmax is the largest wavenumber and νmax is the maximum electron velocity considered in the computations. We present in this paper a one-dimensional particle-pushing algorithm in which particles are advanced, during each time step, along trajectories which are first-order in the field amplitudes. In this algorithm the time step is limited by the nonlinearities and inhomogeneities and must satisfy the conditions ωtΔt «1, and κvmaxΔt « 1, where ωt (« ωp, Ωis the electron trapping frequency and κ (« kmax) is the inverse characteristic length of the inhomogeneities. Two versions of the algorithm, corresponding to Langmuir and whistler waves are given. This algorithm is applicable to problems in which the plasma may be considered to consist of a dense cold component and of a sparse energetic component, such as occur in plasma-beam interactions and in magnetospheric studies. Wave propagation in the cold plasma may then be represented by a fluid model, while resonant wave-particle interactions in the energetic plasma are computed using the present long-time-scale algorithm. Tests of the accuracy of the algorithm and examples of applications to Langmuir and whistler waves are presented." @default.
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- W2006475989 title "Long-time-scale simulation of resonant particle effects in langmuir and whistler waves" @default.
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- W2006475989 doi "https://doi.org/10.1016/0021-9991(78)90078-5" @default.
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