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.

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE