Excimer lamp pumped by a triggered longitudinal discharge

The ultraviolet (UV) radiation performance of an XeCl excimer lamp is measured as a function of the gas mixture composition (with and without neon as buffer gas) and pumping condition (longitudinal discharge with and without trigger). Both spatial distribution and spectral content of the emitted UV radiations are carefully determined including the contribution of the XeCl (B-X), XeCl (C-A), and Xe continuum emissions. A peak power density of up to 3 kW/cm/sup 2/ and an average power density of up to 0.2 W/cm/sup 2/ can be achieved when using a simple cylindrical aluminum reflector.