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Emergence of MHD structures in a collisionless PIC simulation plasma

Abstract : The expansion of a dense plasma into a dilute plasma across an initially uniform perpendicular magnetic field is followed with a one-dimensional particle-in-cell simulation over magnetohydrodynamics time scales. The dense plasma expands in the form of a fast rarefaction wave. The accelerated dilute plasma becomes separated from the dense plasma by a tangential discontinuity at its back. A fast magnetosonic shock with the Mach number 1.5 forms at its front. Our simulation demonstrates how wave dispersion widens the shock transition layer into a train of nonlinear fast magnetosonic waves.
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Submitted on : Thursday, June 30, 2022 - 5:42:47 PM
Last modification on : Monday, July 4, 2022 - 3:33:57 AM

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M. E. Dieckmann, D. Folini, R. Walder, L. Romagnani, E. d'Humieres, et al.. Emergence of MHD structures in a collisionless PIC simulation plasma. Physics of Plasmas, 2017, 24, ⟨10.1063/1.4991702⟩. ⟨insu-03710609⟩



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