Considerable information regarding the properties of systems can be gained from a study of the vibrational spectrum as a function of temperature. Fourier transform infrared spectroscopy is well suited to such studies. The combination of Fellget's advantage, high reproducibility, and
high signal/noise ratio permits the precise monitoring of small spectral changes. The low level of incident energy and the small image (generally <1 mm with high sensitivity detectors) minimizes problems resulting from sample heating and temperature gradients across the sample, and the
use of the transmission technique minimizes shifts in the focus on the detector as a result of thermal expansion and contraction of the sample mount.
Divisions of Chemistry and Biological Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A 0R6
Publication date: March 1, 1981
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)