Accession Number : ADA192884

Title :   Theory and Simulation of Relaxed Plasmoids.

Descriptive Note : Final rept. 1 Sep 86-31 Oct 87,

Corporate Author : MISSION RESEARCH CORP ALEXANDRIA VA

Personal Author(s) : Brandenburg, John ; Wahlstrand, Karna

PDF Url : ADA192884

Report Date : Dec 1987

Pagination or Media Count : 27

Abstract : Plasmoids can be described as a group of electrons and ions that propagate as a unit through vacuum. In their present conception they consist of an expanding halo region, carrying return current and bearing a slight charge imbalance, and an equilibrium core region that propagates like a pinched charged particle beam. This model was first suggested by T. Lockner of Sandia. Since they are a type of charged particle beam, they can be generated with higher efficiency and deposit their energy over a deeper distance in matter than laser beams. This makes plasmoids attractive for defense applications; however, the structure, formation, and propagation of plasmoids in a space environment are not known at present. Theory and one-dimensional simulations aimed at finding the core structure of plasmoids by using variational principles have been successful. This report documents the progress made in this first phase of research. A proposed second phase of research will use similar techniques to model the three-dimensional formation and propagation of plasmoids in a space environment.

Descriptors :   *ELECTRONS, *IONS, *PARTICLE BEAMS, *SPACE ENVIRONMENTS, *PLASMAS(PHYSICS), CHARGED PARTICLES, CORES, DEFENSE SYSTEMS, EFFICIENCY, EQUILIBRIUM(GENERAL), LASER BEAMS, MODELS, ONE DIMENSIONAL, REGIONS, SIMULATION, THREE DIMENSIONAL, VACUUM, VARIATIONAL PRINCIPLES, RELAXATION, PROPAGATION, PINCH EFFECT, LORENTZ FORCE, MAGNETIC FIELDS

Subject Categories : Astrophysics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE