ISSN:
1436-5073
Keywords:
FTIR
;
Spectroscopy
;
light-pipe
;
uranium
;
oxides
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Light pipe infrared reflection spectra of UO2, UO3, U3O8 have been studied by using an FTIR spectrometer. The uranium oxide powders were ground to ensure fine particle size and distributed on the inner surface of a straight glass pipe with gold coating. The infrared beam from the interferometer was focused into one end of the pipe at 45° incidence and then the transmitted beam was refocused by a pair of Cassegrainian type mirrors. The resultant spectra show the infrared characteristics of the ⋯-U-O-U-O-⋯, uranyl ion UO 2 2+ bond vibration and the active lattice vibrations predicted by group theory calculations. In comparison to the transmission spectra measured by authors or reported in literature, this 45° incident light pipe method as well as the previous light pipe method offer advantages of sensitivity, ease of acquisition and interpretation, and require a very small sample. It confirms the power of the light pipe method for studying powders and its special utility for the infrared studies of hazardous materials.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01205867
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