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The characteristics of the emission spectra of Kr/Br 2 and Kr/I 2 mixtures driven by dielectric barrier discharge as a function of gas pressure were respectively investigated. It was found that the KrBr* excimer lamp provided an intense narrow band ultraviolet (UV) radiation at λ=207 nm, whose intensity was strongly influenced by gas pressure and buffer gas. The excimer radiation at λ=191 nm generated by the KrI* excimer lamp was very weak and less dependent on gas pressure due to predissociation which was confirmed by the strong emission of the atomic iodine line at λ=183 nm.
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Feng et al. (2006) studied this question.
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