Electric-discharge UV radiation source based on a Xe-CsCl vapor-gas mixture

A source of spontaneous UV radiation (excilamp) with a maximum radiation intensity at a wavelength of 308 nm is created. The active medium of the excilamp consists of a mixture of Xe with a CsCl vapor, and this mixture is excited in a longitudinal pulsed-periodic discharge. The B → X transition in the XeCl* exciplex molecule most strongly contributes to the total UV radiation power of the excilamp. The spectral composition of the UV radiation, the time characteristics of the source, and the formation of exciplex molecules as a function of the main discharge excitation parameters are studied.