Accession Number:

ADA207952

Title:

Plasma Theory and Simulation

Descriptive Note:

Quarterly progress rept. nos. 1-2, 1 Jan-30 Jun 1988

Corporate Author:

CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB

Personal Author(s):

Report Date:

1988-06-30

Pagination or Media Count:

40.0

Abstract:

A magnetized plasma next to an absorbing wall is simulated, showing positive wall charging causing a large E-field near the wall, than a large ExB drift, then a Kelvin-Helmholtz instability, vortices and coalescence. Particle transport to the walls is Bohm-like, for omega sub pi omega sub ci. Plasma transport across B sub O to a wall is studied without and with an active antenna buried in the wall. Particle losses are increased appreciably by the fields of the antenna. Small angle Coulomb collisions produce a drag force and diffusion tensor, which are calculated self-consistently. This produces a FP-PIC method. An example is shown for a beam scattering off fixed ions. Implicit particle simulations are discussed for bounded plasma. The effect of source distribution on the sheath potential is discussed. Initiation of an effort to simulate a traveling-wave tube is discussed. Substantial progress has been made in making our standard periodic code ES1 work efficiently on a fast PC. A plasma sheath reference listing is discussed.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE