Accession Number:
ADA199454
Title:
Plasma Theory and Simulation
Descriptive Note:
Quarterly progress rept. nos. 3-4, 1 Jul-31 Dec 1987
Corporate Author:
CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB
Personal Author(s):
Report Date:
1987-12-31
Pagination or Media Count:
60.0
Abstract:
General Plasma Theory and Simulation A magnetized plasma next to an absorbing wall is simulated, showing positive wall charging causing a large E- field near the wall, then a large ExB drift, then a Kevlin-Helmholtz instability, vortices and coalescence. Particle transport to the walls is Bohm- like for Omega sub pl Omega sub ci. A kinetic theory, allowing finite ion Larmor radii, general magnetic field geometries and plasma equilibria, has been developed for hydromagnetic Alfven waves excited within the Earths magnetosphere by the storm-time energetic ring-current particles. Multi-time and space scaling for bounded plasmas is being developed using an implicit method. It is found that using large time steps, Omega sub ce Delta t 1 provides reliable guiding center motions for single particles. Electron-neutral elastic scattering is added to ES1 readily. Runs with initial beam verify predictions. RF heating ECRH is shown to work well with PIC simulations, providing results very similar to a Monte Carlo RF heating code. Keywords Plasma theory, Plasma wall interactions, Large potentials in plasmas.
Descriptors:
- *PLASMAS(PHYSICS)
- *MAGNETOSPHERE
- MAGNETIC FIELDS
- MAGNETIC PROPERTIES
- INTERACTIONS
- MOTION
- VORTICES
- COALESCENCE
- ELECTRONS
- DRIFT
- PARTICLES
- HEATING
- SCALING FACTOR
- TRANSPORT
- GEOMETRY
- WALLS
- ELASTIC SCATTERING
- MAGNETIZATION
- MAGNETOHYDRODYNAMICS
- RADIOFREQUENCY POWER
- KINETIC THEORY
- MAGNETOHYDRODYNAMIC WAVES
- SIMULATION
- IONS
Subject Categories:
- Plasma Physics and Magnetohydrodynamics