Abstract

Optical characteristics of a coaxial HgBr excilamp on multicomponent mercury dibromide vapour mixtures with helium, nitrogen and sulfur hexafluoride are investigated under pumping by a pulse-periodic barrier discharge. Stable excilamp operation was demonstrated at a pump pulse repetition rate of . The component composition of the working system was determined, which provides a maximal average and pulsed specific radiation power of and , respectively, at the efficiency of 7.3% in the blue-green spectral range with the maximal radiation intensity at the wavelength of . The reduction in the radiation power after shots is 5%. Interpretation is given for the results of optimisation of excilamp characteristics.

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