Accession Number:

AD0763808

Title:

Diffusion Wave Technique Applied to a Magnetized Helium Positive Column Plasma.

Descriptive Note:

Doctoral thesis,

Corporate Author:

COLORADO UNIV BOULDER DEPT OF AEROSPACE ENGINEERING SCIENCES

Personal Author(s):

Report Date:

1973-01-01

Pagination or Media Count:

110.0

Abstract:

A new technique is developed for exciting a one-dimensional diffusion wave transverse to the magnetic field in an active helium positive column plasma. A modulated electron beam is used to produce a sinusoidal plasma density perturbation along the axis of a quiet magnetized helium positive column plasma. The perturbation in plasma density dissipates radially from the axis as a diffusion wave. Radial profiles of amplitude and phase of the perturbation are measured with a movable Langmuir probe input to a phase-lock amplifier. The transverse diffusion coefficient is obtained by fitting a diffusion model to the amplitude and phase profiles. Modified author abstract

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE