Title :
Light emission during cathode sheath formation in preionized high-pressure glow discharges
Author :
Dreiskemper, Ralf ; Schröder, Gerald ; Bötticher, Woldemar
Author_Institution :
Inst. fur Plasmaphys., Hannover Univ., Germany
fDate :
4/1/1995 12:00:00 AM
Abstract :
The cathode sheath formation in a transient spatially small X-ray preionized high-pressure glow discharge with parameters typical for neon buffered XeCl lasers is investigated experimentally. Pictures of the light emission are taken with high temporal (≈1 ns) and spatial (≈25 μm) resolution using a gated CCD-camera as well as a streak camera. Quantitative data on the spatial and temporal development of the sheath structure are given. The most prominent feature is an extremely fast formation of a thin and very bright cathode sheath at a time which could be time correlated with an accuracy of ±0.2 ns with the discharge current. The results can be used to check numerical model calculations of the sheath formation
Keywords :
cathodes; charge-coupled devices; glow discharges; plasma sheaths; Ne buffered XeCl lasers; X-ray preionized high-pressure glow discharge; cathode sheath formation; discharge current; gated CCD-camera; high spatial resolution; high temporal resolution; light emission; numerical model calculations; quantitative data; sheath structure; streak camera; Cathodes; Charge-coupled image sensors; Current density; Electron beams; Glow discharges; Optical pulses; Plasma sheaths; Pump lasers; Spatial resolution; X-ray lasers;
Journal_Title :
Plasma Science, IEEE Transactions on
