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Proceedings Paper

Spectroscopy And Photochemistry In Cryogenic Solutions
Author(s): W. H. Beattie; W. B. Maier; R. F. Holland; S. M. Freund; B. Stewart
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Paper 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.

Paper Details

Date Published: 9 November 1978
PDF: 9 pages
Proc. SPIE 0158, Laser Spectroscopy: Applications and Techniques, (9 November 1978); doi: 10.1117/12.956823
Show Author Affiliations
W. H. Beattie, University of California (United States)
W. B. Maier, University of California (United States)
R. F. Holland, University of California (United States)
S. M. Freund, University of California (United States)
B. Stewart, University of California (United States)

Published in SPIE Proceedings Vol. 0158:
Laser Spectroscopy: Applications and Techniques
Howard R. Schlossberg, Editor(s)

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