XeI barrier discharge excilamp

Barrier discharges in Xe-I 2 (100-0.04 Torr) mixtures are studied experimentally and theoretically. It is shown that the experimental efficiency and the intensity of radiation in the B → X band of XeI* (253 nm) may reach 5.5% and 9 mW/cm 2 , respectively. The simulation results show that the main energy loss channel is heating of ions. The radiation yield can be increased by shortening the applied voltage pulse duration.