Plasma-neutral equilibrium in centrifugally confined Plasma
Author: Sheung Wa NG
Requested Type: Poster Only
Submitted: 2006-12-18 22:46:43
Co-authors: A.B.Hassam
Contact Info:
IREAP, University of Maryland, College Park
IREAP, University of Maryland
College Park, MD 20742
USA
Abstract Text:
A simple model is developed for the penetration of neutrals into plasma for a rotating mirror configuration, for example, the Maryland Centrifugal eXperiment (MCX). In such configurations, the inward confining force originating from the centrifugal force competes with the tendency of the plasma to expand in the
parallel direction. By including ionization, charge exchange, and recycling in this model, the distribution of neutrals in the centrifuge is calculated. An exponential relation between the centrifugal confining force and the neutral density at the axial wall is demonstrated. The distribution of neutrals at the wall crossfield to the plasma has been considered earlier. The rossfield
physics is different from the axial physics and disparate neutral wall densities are found. The combined neutral distribution in 2D is not well understood yet. We have developed a 2D code for this purpose. In the crossfield direction, classical diffusion losses are allowed. All the parameters are set to close to MCX parameters in order to investigate the effects of confinement on the neutral-plasma profiles/interactions.
Characterization: A1
Comments:
