Line broadening, shifting, and mixing in the fundamental band of CO perturbed by N-2 at 301 K

Using a difference frequency spectrometer we have measured the widths, shifts and line mixing parameters of many lines in the fundamental band of CO perturbed by N-2 at approximately 50 kPa and 301 K. The spectral resolution was 6 x 10(-5) cm(-1) and the typical signal to noise ratio exceeded 2000. The spectral data are more extensive and more precise than the data currently used in the HITRAN92 database. At the 1% level we have reached the limit of accuracy with which a Lorentzian model will represent the data. (C) 1997 Academic Press, Inc.