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A Multi Water Bag model of drift kinetic electron plasma

Pierre Morel 1 Florent Dreydemy Ghiro 1 Vincent Berionni 1 David Coulette 2 Nicolas Besse 2, 3 Özgür D. Gürcan 1 
3 CALVI - Scientific computation and visualization
IRMA - Institut de Recherche Mathématique Avancée, LSIIT - Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection, Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine
Abstract : A Multi Water Bag model is proposed for describing drift kinetic plasmas in a magnetized cylindrical geometry, relevant for various experimental devices, solar wind modeling ... The Multi Water Bag (MWB) model is adapted to the description of a plasma with kinetic electrons as well as an arbitrary number of kinetic ions. This allows to describe the kinetic dynamics of the electrons, making possible the study of electron temperature gradient (ETG) modes, in addition to the effects of non adiabatic electrons on the ion temperature gradient (ITG) modes, that are of prime importance in the magnetized plasmas micro-turbulence [X. Garbet, Y. Idomura, L. Villard, T.H. Watanabe, Nucl. Fusion 50, 043002 (2010); J.A. Krommes, Ann. Rev. Fluid Mech. 44, 175 (2012)]. The MWB model is shown to link kinetic and fluid descriptions, depending on the number of bags considered. Linear stability of the ETG modes is presented and compared to the existing results regarding cylindrical ITG modes [P. Morel, E. Gravier, N. Besse, R. Klein, A. Ghizzo, P. Bertrand, W. Garbet, Ph. Ghendrih, V. Grandgirard, Y. Sarazin, Phys. Plasmas 14, 112109 (2007)].
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Pierre Morel, Florent Dreydemy Ghiro, Vincent Berionni, David Coulette, Nicolas Besse, et al.. A Multi Water Bag model of drift kinetic electron plasma. The European Physical Journal D : Atomic, molecular, optical and plasma physics, EDP Sciences, 2014, 68 (8), ⟨10.1140/epjd/e2014-50165-8⟩. ⟨hal-01286886⟩



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