Accession Number:

ADA170363

Title:

Studies in High Current Beam Propagation at Reduced Pressures.

Descriptive Note:

Annual rept. 15 Mar 81-30 Nov 84,

Corporate Author:

SCIENCE APPLICATIONS INTERNATIONAL CORP LOS ALTOS CA

Personal Author(s):

Report Date:

1985-01-31

Pagination or Media Count:

121.0

Abstract:

Hall current effects in the redistribution of plasma currents and possible stability enhancement in electron beams were explored in a range of pressure regimes. Improved e.m. algorithms and conductivity models were developed as part of the studies. Substantial effects were found below a low pressure threshold, where nonlocal effects, non-Ohmic conductivity, and a highly non-Maxwellian distribution of plasma electron energies were all found to contribute significantly to the magnitude of Hall current phenomena. Several e.m. field algorithms were developed for application to the nonlinear hose-displacement regime. An iterative approach to the solution of the modally expanded field equations was found to yield fast and accurate solutions.

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE