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
Descriptors:
Subject Categories:
- Plasma Physics and Magnetohydrodynamics