Axial evolution of the negative glow in a hollow cathode discharge.
The purpose of these studies was to examine the axial evolution of the negative glow in a hollow cathode discharge. The time-average negative glow profiles along the central axis of a hollow cathode were recorded for 81 pulse widths over the range of 5-25 microseconds in increments of 0.25 microseconds at a constant interpulse delay of 206.4 microseconds. Subsequent numerical processing yielded the instantaneous negative glow profile. The negative glow was viewed through a mesh-covered slot along the length of the hollow cathode. The negative flow profiles were imaged using a vidicon video camera. A PC-based frame grabber digitized the video images and stored them for subsequent processing.
Bartlow
R B
RB
Department of Electrical Engineering, Memphis State University, Tennessee 38152.
Griffin
S T
ST
Williams
J C
JC
D002623:Chemistry Techniques, Analytical; D004566:Electrodes; D007091:Image Processing, Computer-Assisted