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Title: Kinetic Electron Closures for Electromagnetic Simulation of Drift and Shear-Alfven Waves (II)

Abstract

An electromagnetic hybrid scheme (fluid electrons and gyrokinetic ions) is elaborated in example calculations and extended to toroidal geometry. The scheme includes a kinetic electron closure valid for {beta}{sub e} > m{sub e}/m{sub i} ({beta}{sub e} is the ratio of the plasma electron pressure to the magnetic field energy density). The new scheme incorporates partially linearized ({delta}f) drift-kinetic electrons whose pressure and number density moments are used to close the fluid momentum equation for the electron fluid (Ohm's law). The test cases used are small-amplitude kinetic shear-Alfven waves with electron Landau damping, the ion-temperature-gradient instability, and the collisionless drift instability (universal mode) in an unsheared slab as a function of the plasma {beta}{sub e}. Attention is given to resolution and convergence issues in simulations of turbulent steady states.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15006149
Report Number(s):
UCRL-JC-142446-REV-1
Journal ID: ISSN 1070-664X; TRN: US0400437
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 9; Journal Issue: 5; Conference: 43rd Annual Meeting of the Division of Plasma Physics, Long Beach, CA (US), 10/29/2001--11/02/2001; Other Information: PBD: 11 Oct 2001
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CLOSURES; CONVERGENCE; DRIFT INSTABILITY; ELECTRONS; GEOMETRY; INSTABILITY; KINETICS; LANDAU DAMPING; MAGNETIC FIELDS; PHYSICS; PLASMA; RESOLUTION; SIMULATION

Citation Formats

Cohen, B I, Dimits, A M, Nevins, W M, Chen, Y, and Parker, S. Kinetic Electron Closures for Electromagnetic Simulation of Drift and Shear-Alfven Waves (II). United States: N. p., 2001. Web. doi:10.1063/1.1454999.
Cohen, B I, Dimits, A M, Nevins, W M, Chen, Y, & Parker, S. Kinetic Electron Closures for Electromagnetic Simulation of Drift and Shear-Alfven Waves (II). United States. https://doi.org/10.1063/1.1454999
Cohen, B I, Dimits, A M, Nevins, W M, Chen, Y, and Parker, S. 2001. "Kinetic Electron Closures for Electromagnetic Simulation of Drift and Shear-Alfven Waves (II)". United States. https://doi.org/10.1063/1.1454999. https://www.osti.gov/servlets/purl/15006149.
@article{osti_15006149,
title = {Kinetic Electron Closures for Electromagnetic Simulation of Drift and Shear-Alfven Waves (II)},
author = {Cohen, B I and Dimits, A M and Nevins, W M and Chen, Y and Parker, S},
abstractNote = {An electromagnetic hybrid scheme (fluid electrons and gyrokinetic ions) is elaborated in example calculations and extended to toroidal geometry. The scheme includes a kinetic electron closure valid for {beta}{sub e} > m{sub e}/m{sub i} ({beta}{sub e} is the ratio of the plasma electron pressure to the magnetic field energy density). The new scheme incorporates partially linearized ({delta}f) drift-kinetic electrons whose pressure and number density moments are used to close the fluid momentum equation for the electron fluid (Ohm's law). The test cases used are small-amplitude kinetic shear-Alfven waves with electron Landau damping, the ion-temperature-gradient instability, and the collisionless drift instability (universal mode) in an unsheared slab as a function of the plasma {beta}{sub e}. Attention is given to resolution and convergence issues in simulations of turbulent steady states.},
doi = {10.1063/1.1454999},
url = {https://www.osti.gov/biblio/15006149}, journal = {},
issn = {1070-664X},
number = 5,
volume = 9,
place = {United States},
year = {Thu Oct 11 00:00:00 EDT 2001},
month = {Thu Oct 11 00:00:00 EDT 2001}
}

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