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Title: Fluid electrons with kinetic closure for long wavelength energetic particles driven modes

Abstract

A kinetic electron closure scheme is presented for the fluid electron model that has been implemented in the GEM code [J. Lang, Y. Chen, S. E. Parker, and G.-Y. Fu, Phys. Plasmas 16, 102101 (2009)]. The most important element of the closure scheme is a complete Ohm's law for the parallel electric field E{sub ||}, derived by combining the quasineutrality condition, the Ampere's equation and the v{sub ||} moment of the gyrokinetic equations. A discretization method for the closure scheme is presented and studied in detail for a three-dimensional shearless slab plasma. It is found that for long wavelength shear Alfven waves the kinetic closure scheme is both more accurate and more robust than the previous GEM algorithm [Y. Chen and S. E. Parker, J. Comput. Phys. 189, 463 (2003)], whereas for the ion-gradient-driven instability the previous algorithm is more efficient. The fluid electron model with kinetic electron closure is useful for studying energetic particles driven modes with electron kinetic damping effects.

Authors:
;  [1]
  1. Center for Integrated Plasma Studies, University of Colorado at Boulder, Boulder, Colorado 80309 (United States)
Publication Date:
OSTI Identifier:
21537853
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 5; Other Information: DOI: 10.1063/1.3567023; (c) 2011 American Institute of Physics; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALFVEN WAVES; DAMPING; ELECTRIC FIELDS; ELECTRONS; OHM LAW; PLASMA; PLASMA INSTABILITY; PLASMA SIMULATION; THREE-DIMENSIONAL CALCULATIONS; ELEMENTARY PARTICLES; FERMIONS; HYDROMAGNETIC WAVES; INSTABILITY; LEPTONS; SIMULATION

Citation Formats

Yang, Chen, and Parker, Scott E. Fluid electrons with kinetic closure for long wavelength energetic particles driven modes. United States: N. p., 2011. Web. doi:10.1063/1.3567023.
Yang, Chen, & Parker, Scott E. Fluid electrons with kinetic closure for long wavelength energetic particles driven modes. United States. https://doi.org/10.1063/1.3567023
Yang, Chen, and Parker, Scott E. 2011. "Fluid electrons with kinetic closure for long wavelength energetic particles driven modes". United States. https://doi.org/10.1063/1.3567023.
@article{osti_21537853,
title = {Fluid electrons with kinetic closure for long wavelength energetic particles driven modes},
author = {Yang, Chen and Parker, Scott E},
abstractNote = {A kinetic electron closure scheme is presented for the fluid electron model that has been implemented in the GEM code [J. Lang, Y. Chen, S. E. Parker, and G.-Y. Fu, Phys. Plasmas 16, 102101 (2009)]. The most important element of the closure scheme is a complete Ohm's law for the parallel electric field E{sub ||}, derived by combining the quasineutrality condition, the Ampere's equation and the v{sub ||} moment of the gyrokinetic equations. A discretization method for the closure scheme is presented and studied in detail for a three-dimensional shearless slab plasma. It is found that for long wavelength shear Alfven waves the kinetic closure scheme is both more accurate and more robust than the previous GEM algorithm [Y. Chen and S. E. Parker, J. Comput. Phys. 189, 463 (2003)], whereas for the ion-gradient-driven instability the previous algorithm is more efficient. The fluid electron model with kinetic electron closure is useful for studying energetic particles driven modes with electron kinetic damping effects.},
doi = {10.1063/1.3567023},
url = {https://www.osti.gov/biblio/21537853}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 18,
place = {United States},
year = {Sun May 15 00:00:00 EDT 2011},
month = {Sun May 15 00:00:00 EDT 2011}
}