Accession Number:

ADA257765

Title:

Force-Free Time-Harmonic Plasmoids

Descriptive Note:

Interim rept. Nov 1991-Jul 1992

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Personal Author(s):

Report Date:

1992-10-01

Pagination or Media Count:

102.0

Abstract:

A heretofore unexplored solution of Maxwells equations is investigated for time-harmonic waves in a partially ionized gas. The analysis is focused on the spherically symmetric cases that behave like electromagnetic energy trapped in the form of a plasmoid . It will be shown that a critical frequency exists, below which the current cannot be carried by electrons and the plasmoid remains stable. Resonant sizes will be shown to exist such that plasmoids will not exchange energy with their external surroundings, and their boundary conditions can be met by vacuum solutions to Maxwells equations. Virial analysis calculates free-change density and critical frequency to be consistent with Newtonian mechanics and classical electromagnetics. A stable vortical motion of the plasma will be shown to exactly cancel the dominant component of the electromechanical stresses, with the residual stresses being a strongly decreasing function of frequency.

Subject Categories:

  • Electricity and Magnetism
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE