Determination of Accurate Water Vapor Calibration Points for Prism Spectrometers in the Region 1330—2100 cm—1

Abstract

The spectrum of water vapor in the region 1330—2100 cm—1 has been observed with a CaF2 prism in a Perkin-Elmer double-pass spectrometer. A Friedel-McKinney equation [D. S. McKinney and R. A. Friedel, J. Opt. Soc. Am. 38, 222 (1948)] which was successful in determining frequencies for TBr and TCl was used to determine the water vapor frequencies. Many of these water vapor frequencies are presented as the best available calibration points in the 1300—2100 cm—1 region, accurate to ±0.3 cm—1.