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Published June 11, 2007 | Published
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Xenon excimer emission from pulsed high-pressure capillary microdischarges


Intense xenon vacuum ultraviolet (VUV) emission is observed from a high-pressure capillary cathode microdischarge in direct current operation, by superimposing a high-voltage pulse of 50 ns duration. Under stagnant gas conditions, the total VUV light intensity increases linearly with pressure from 400 to 1013 mbar for a fixed voltage pulse. At fixed pressure, however, the VUV light intensity increases superlinearly with voltage pulse height ranging from 0.8 to 2.8 kV. Gains in emission intensity are obtained by inducing gas flow through the capillary cathode, presumably because of excimer dimer survival due to gas cooling.

Additional Information

© 2007 American Institute of Physics (Received 18 April 2007; accepted 20 May 2007; published online 14 June 2007) The authors gratefully acknowledge the support of this work by the "Deutscher Akademischer Austauschdienst" (Code No. A/02/08987).

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