Air- and N2-Broadening parameters of water vapor:: 604 to 2271 cm-1

High-resolution measurements of air- and N-2-broadened widths and pressure-induced frequency shifts of water vapor were obtained covering the spectral region between 604 and 2271 cm(-1). Over 1300 vibration-rotation transitions were measured including the (000)-(000). (010)-(010), (010)-(000), (020)-(010), and (100)-(020) vibrational bands of (H2O)-O-16. Also included were measurements of (H2O)-O-18 and (H2O)-O-17 from normal water vapor samples and (H2O)-O-18 + N-2 observations with oxygen-18-enriched gas samples. Collision-narrowing effects were observed in a few lines involving high J and low K-a transitions with the lowest measured linewidth coefficient equal to 0.0057(4) cm(-1)/atm (air-broadening) for the completely overlapping transitions, 17 0 17 <-- 18 1 18 and 17 1 17 <-- 18 0 18. at 1235.204 cm(-1). The majority of the linewidth values were derived from the measurements using a Voigt line profile. A few lines with air- or N-2-broadened half-width values of about 0.012 cm(-1) or less were found to exhibit collision-narrowing effects and were also analyzed with a profile proposed by Galatry. The results are compared to values given in previous studies. (C) 2000 Academic Press.