Axial evolution of the negative glow in a hollow cathode discharge. |
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Authors: | R B Bartlow S T Griffin J C Williams |
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Affiliation: | Department of Electrical Engineering, Memphis State University, Tennessee 38152. |
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Abstract: | 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. |
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