Accession Number:

AD0412810

Title:

THE STABILITY OF THE POSITIVE COLUMN IN A TIME DEPENDENT MAGNETIC FIELD,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s):

Report Date:

1962-12-01

Pagination or Media Count:

38.0

Abstract:

The stability of a weakly ionized plasma column in a longitudinal magnetic field containing a small time varying component is investigated, using a macroscopic approach previously developed by the authors foatic field. The time de pendence of the field is taken to be linear, and its influence on the column given by the presence of the induced azimuthal electric field. A dispersion relation is derived from the linear ized equations of continuity and momentum con servation for the ions and electrons, from which a family of stability boundary curves in the E sub z vs. B plane are found for the case of a helical perturbation in helium. The condition of energy balecce of the column including the azimuthal electric field is combined with the dispersion relation to yield a family of sta bility boundary curves in the E sub theta vs. B plane with gas pressure times tube radius as a parameter. These curves indicate regions of stability which are absent in the case of a stat ic magnetic field. Author

Descriptors:

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE