The far UV spectra of a flashlamp with a rise time of 30 ns filled with either N2, Xe, Kr, or Ar, F2, He mixtures at 1 bar have been recorded. Emission of these flashlamps are compared in a band ranging from 190 to 220 nm. It is shown that the N2 and ArF flashlamps produce an nearly identical output and are best suited for TlI photodissociation. The light energy in this band with respect to the total emission from 190 nm to 4.5 μm amounts to 7% for N2 and 15%–25% for ArF.
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