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- W80508108 abstract "Prior to the work in this laboratory demonstrating successful Br isotope separation using a cw CO2 laser [1], the only two reports of isotope separation using cw IR lasers to excite the reagents have been those by MAYER et al. [2] and CHIEN and BAUER [3]. The chief reasons for this are the severe problems of VV interisotope energy exchange and bulk heating, both of which cause isotope scrambling. Recently, MANUCCIA and co-workers have devised the method of “VT competing deactivation” which overcomes these constraints and have demonstrated cw IR laser isotope separation employing a vibrationally enhanced bimolecular reaction [1]. Employing the technique, we have succeeded in enriching deuterium by as much as 72% in the products of the radical chain reaction of chlorine atoms with a mixture of CH2D2 and CH4 by exciting the CH2D2 molecules with a cw CO2 laser. A conservative energy cost estimate based on natural abundance methane feed (preliminary results with a CH3D-CH4 mixture have shown comparable deuterium enrichment) indicates that it is within a factor of 3–4 of that for the current commercial process.KeywordsEnrichment FactorVibrational ExcitationIsotope SeparationMethane PressureIsotope SelectivityThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W80508108 date "1978-01-01" @default.
- W80508108 modified "2023-09-27" @default.
- W80508108 title "Deuterium Enrichment by CW CO2 Laser Induced Vibrational Photochemistry" @default.
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- W80508108 doi "https://doi.org/10.1007/978-3-642-67054-1_8" @default.
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