Abstract
The isotopically selective IR multiphoton dissociation of molecules (here CF3I) in a pulsed gasdynamic flow of small extent (the length of the flow in space is Δx fl⩽1 cm) is investigated under conditions such that the entire flow is irradiated by high-intensity IR laser radiation. The use of a flow of small extent permits achieving high dissociation yields of resonantly excited molecules in the entire volume of the flow and thus to obtain a highly enriched residual gas in one radiation cycle. The method described gives a 400-fold enrichment of the residual gas in the isotope 13C when a pulsed molecular flow of CF3I of natural isotopic composition is irradiated by just a single laser pulse. The dissociation yield in this case is practically unity, and the selectivity α⩾10.
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Zh. Tekh. Fiz. 69, 35–41 (January 1999)
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Makarov, G.N., Malinovskii, D.E. & Ogurok, D.D. Selective infrared multiphoton dissociation of molecules in a pulsed gasdynamic flow of small extent. Tech. Phys. 44, 31–36 (1999). https://doi.org/10.1134/1.1259248
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DOI: https://doi.org/10.1134/1.1259248