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Parallel implementation of a relativistic semi-Lagrangian Vlasov-Maxwell solver

Abstract : We describe the parallel implementation of a semi-lagrangian relativistic VLasov ElectroMagnetic (VLEM) code for the numerical investigation of the dynamics of charged particle distribution in their self-consistent electromagnetic fields. This paper introduces the numerical solution of the Vlasov-Maxwell system in two spatial dimensions, and two or three momentum dimensions. Accuracy, stability, efficiency properties and the implementation of a new algorithm of charge conservation when solving Maxwell equations are discussed. The performances of the code are tested by studying the evolution of Weibel-type instabilities in the relativistic regime. Application to the coupling between Current Filamentation (CFI) and Two-Stream (TSI) instabilities is presented showing the importance of pair-wise vortex merging scenario in the saturation mechanism .
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Submitted on : Monday, May 14, 2018 - 6:13:15 PM
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Mathieu Sarrat, Alain Ghizzo, Daniele del Sarto, Laurent Serrat. Parallel implementation of a relativistic semi-Lagrangian Vlasov-Maxwell solver. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2017, 71 (11), pp.271. ⟨10.1140/epjd/e2017-80188-4⟩. ⟨hal-01791759⟩



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