PMID: 18200254Dec 1, 1983Paper

Water-vapor continuum CO2 laser absorption spectra between 27 degrees C and -10 degrees C

Applied Optics
G L LoperJ A Gelbwachs

Abstract

Water continuum CO2 laser absorption spectra are reported for temperatures between 27 and -10 degrees C. The continuum is found to possess a negative temperature coefficient. The results obtained suggest that the magnitude of this temperature coefficient increases with increasing water pressure and decreasing temperature. The temperature coefficients between 27 and 10 degrees C for air mixtures containing 3.0- and 7.5-Torr water vapor are -2.0 +/- 0.4 and -2.9 +/- 0.5%/ degrees C, respectively. For mixtures with 3.0-Torr water the 10-0 degrees C temperature coefficient is -7.7 +/- 0.2%/degrees C. The temperature and water pressure dependencies observed for the continuum suggest that while both collisional broadening and water dimer mechanisms contribute to the continuum, the dimer mechanism is more important over this temperature range.

References

Mar 1, 1983·Applied Optics·J S RyanR A Crane
Oct 1, 1976·Applied Optics·M S ShumateL G Rosengren
Sep 1, 1978·Applied Optics·K O WhiteF G Smith
Mar 15, 1979·Applied Optics·J C PetersonR K Long

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Citations

Apr 20, 2005·The Journal of Chemical Physics·John G CormierJames R Drummond
Nov 1, 1985·Applied Optics·M E Thomas, R J Nordstrom
May 2, 2012·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Yu I Baranov, W J Lafferty
May 1, 1984·Applied Optics·J S RyanR A Crane
Aug 1, 1987·Applied Optics·W B GrantD M Tratt
Jun 10, 2008·The Journal of Chemical Physics·Mal-Soon LeeS Scandolo
Feb 1, 1987·Applied Optics·S L Bragg, J D Kelley

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