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  Importance of accurate consideration of the electron inertia in hybrid-kinetic simulations of collisionless plasma turbulence: The 2D limit

Jain, N., Muñoz, P. A., Farzalipour Tabriz, M., Ramp, M., & Büchner, J. (2022). Importance of accurate consideration of the electron inertia in hybrid-kinetic simulations of collisionless plasma turbulence: The 2D limit. Physics of Plasmas, 29, 053902. doi:10.1063/5.0087103.

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https://ui.adsabs.harvard.edu/abs/2022PhPl...29e3902J (beliebiger Volltext)
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 Urheber:
Jain, Neeraj1, Autor           
Muñoz, Patricio A.1, Autor           
Farzalipour Tabriz, Meisam2, Autor           
Ramp, M., Autor
Büchner, J.1, Autor           
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              
2Max Planck Computing and Data Facility, Max Planck Society, ou_2364734              

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Schlagwörter: Physics - Plasma Physics
 Zusammenfassung: The dissipation mechanism of the magnetic energy in turbulent collisionless space and astrophysical plasmas is still not well understood. Its investigation requires efficient kinetic simulations of the energy transfer in collisionless plasma turbulence. In this respect, hybrid-kinetic simulations, in which ions are treated as particles and electrons as an inertial fluid, have begun to attract a significant interest recently. Hybrid-kinetic models describe both ion- and electron scale processes by ignoring electron kinetic effects so that they are computationally much less demanding compared to fully kinetic plasma models. Hybrid-kinetic codes solve either the Vlasov equation for the ions (Eulerian Vlasov-hybrid codes) or the equations of motion of the ions as macro-particles [Lagrangian particle-in-cell (PIC)-hybrid codes]. They consider the inertia of the electron fluid using different approximations. We check the validity of these approximations by employing our recently massively parallelized three-dimensional PIC-hybrid code Code Hybrid with Inertial Electron Fluid (CHIEF), which considers the electron inertia without any of the common approximations. In particular, we report the results of simulations of two-dimensional collisionless plasma turbulence. We conclude that the simulation results obtained using hybrid-kinetic codes, which use approximations to describe the electron inertia, need to be interpreted with caution. We also discuss the parallel scalability of CHIEF, to the best of our knowledge, the first PIC-hybrid code, which without approximations describes the inertial electron fluid.

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 Datum: 2022
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1063/5.0087103
ISSN: 1070-664X
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Titel: Physics of Plasmas
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 29 Artikelnummer: - Start- / Endseite: 053902 Identifikator: -