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Measurements of Foreign Gas Pressure Shift and Broadening Effects in the (1-0) Band of CO with N2 and Ar

✍ Scribed by N. Anselm; K.M.T. Yamada; R. Schieder; G. Winnewisser

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 476 KB
Volume: 161
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1993.1234

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✦ Synopsis

The pressure broadenings and shifts of rovibrational transitions of the (\mathrm{CO}) fundamental band with foreign gases, Argon and Nitrogen, were measured by a tunable diode laser spectrometer. High (J(\leqslant 34) R)-branch and low (J R) - and (P)-branch transitions have been recorded with very high accuracy (\left(5 \times 10^{-5} \mathrm{~cm}^{-1}\right)). These highly accurate and very sensitive measurements became possible with a newly designed shock-isolated laser cold head and the application of an extremely stable 50-m multiple-path cell of the Herriott type. The accuracy of the line shift and broadening coefficients obtained in the present study is about (3 \times 10^{-4} \mathrm{~cm}^{-1} /) bar. E 1993 Academic Press. Inc.

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