The development of a silent discharge-driven excimer UV light source

In this paper we present the optimization of a silent discharge-driven excimer UV light source. The radiant power and emission efficiency were measured as functions of the gas gap, partial pressure of and total Xe plus pressure for uncooled lamps driven by a sinusoidal voltage. Approximately 90% of the lamp output was in the B - X transition at 282 nm. The optimal lamp performance was measured with a gap spacing of 7.5 mm and a 150 Torr filling of 0.15% in Xe. For the optimized system, UV production efficiencies, including losses in the screen electrode, exceeded 7.5% and UV output power densities of 10 mW were measured at a driving frequency of 15 kHz.