Spectroscopy And Photochemistry In Cryogenic Solutions

W. H. Beattie; W. B. Maier II; R. F. Holland; S. M. Freund; B. Stewart

doi:10.1117/12.956823

9 November 1978 Spectroscopy And Photochemistry In Cryogenic Solutions

W. H. Beattie, W. B. Maier II, R. F. Holland, S. M. Freund, B. Stewart

Proceedings Volume 0158, Laser Spectroscopy: Applications and Techniques; (1978) https://doi.org/10.1117/12.956823
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

Ultraviolet and infrared spectra are presented for CO₂, CH₂O, CD₂O, CC1₂F₂, C₂H₃C1, CH₃OH, and 0s0₄ dissolved in liquified Xe, Kr, Ar, or air, and SeF₆ dissolved in solid Xe. The infrared absorption features in the liquid solutions are narrower than the corresponding gas phase vibrational bands but broader than rotational lines. Absorption bands in the solids are narrower than in the liquids. Absorption bands in SeF₆ exhibit the Se-isotope splitting. The frequencies of the absorption features are observed to shift with solvent, temperature, and isotopic composition. High solute densities (10¹⁷ to 10¹⁹ molecules/cm³) are obtainable. Some unstable compounds, such as CH₂O monomer at 10¹⁸ molecules/cm³, form stable cryogenic solutions. Cryogenic solutions are shown to be useful for spectroscopic detection of parts per million to parts per billion impurities in gases and for photochemically induced isotope separation.

Citation Download Citation

W. H. Beattie, W. B. Maier II, R. F. Holland, S. M. Freund, and B. Stewart "Spectroscopy And Photochemistry In Cryogenic Solutions", Proc. SPIE 0158, Laser Spectroscopy: Applications and Techniques, (9 November 1978); https://doi.org/10.1117/12.956823

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