Previous abstract|Graphical version|Text version|Next abstract

Session 7P - Plasma Applications and Plasma Technology.
POSTER session, Thursday morning, November 14
Exhibit Hall - Concourse Level, Adam's Mark

[7P.02] Plasma Density as a Function of Driving Frequency in a Helicon Source

Paul A. Keiter, Matthew M. Balkey, Earl E. Scime (West Virginia University)

The West Virginia University Hot hELIcon eXperiment (HELIX) is a large volume (15.25 cm diameter), steady state helicon source. We present radial profiles of the density at different positions downstream from the antenna as a function of the driving frequency (3 MHz - 30 MHz) using an RF-compensated Langmuir probe and calibrating the results with microwave reflectometry. We also present measurements of the density as a function of antenna length for both the Nagoya Type III and right helical antenna (m = ( 1) configurations at these frequencies.

Part 7 of program listing