Kinetic Electron Closures for Electromagnetic Simulation of Drift and Shear-Alfven Waves (II)
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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15006149
- Report Number(s):
- UCRL-JC-142446-REV-1; TRN: US0400437
- 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
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