Force-Free Time-Harmonic Plasmoids
Interim rept. Nov 1991-Jul 1992
DAYTON UNIV OH RESEARCH INST
Pagination or Media Count:
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.
- Electricity and Magnetism
- Plasma Physics and Magnetohydrodynamics