High-power spontaneous UV radiation source and its excitation regimes

Different excitation regimes of a discharge in a xenon flashlamp are studied. It is shown that in passing from the oscillating discharge current to the unidirectional current pulse, the UV power radiation increases, while the FWHM of the radiation pulses decreases. The maximum UV power density of the discharge restricted by the flashlamp tube walls was ~700 and ~380 kW cm^-2 on the internal and external surfaces of the flashlamp tube, respectively.