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FTIR spectra of noble-gas molecules prepared from acetylene in solid Xe. (a) Spectrum of the photolysed and thermally annealed solid mixture. (b) Difference spectrum showing the result of irradiation of the photolysed and thermally annealed sample at . The spectra were measured with a Nicolet 60 SX FTIR spectrometer (resolution of ) at .
Photodecomposition spectrum of and in solid Xe at . With a pulse energy density of , 200 pulses at decomposes about a half of radicals, which estimates photodecomposition cross-section of .
Dark-recovery time of and as a function of 1/T. In the beginning, the molecules were partially decomposed by IR light. The recovery time was found by fitting the kinetics data with a single exponent.
Recovery profiles of and (symbols) and FTIR spectrum of the first stretching overtone of . The Burleigh WA-4500 wavemeter provided the OPO radiation frequency with absolute accuracy better than , and the fine shift of the frequency scale is provided by the correction obtained in Ref. 24.
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