N2 Broadening in the 13C16O 2-0 Band around 4167 cm-1

ABSTRACT

N2 broadening coefficients have been measured for 65 lines of the 13C16O 2-0 band using a Fourier transform spectrometer. These lines are located in the spectral range 4011-4252 cm-1. The spectra were recorded with 99% isotopically pure 13CO in a White-type cell at a resolution of 0.005 cm-1. Voigt profiles convolved with the FTS apparatus function were fitted to the experimental lineshapes using a nonlinear least-squares fit technique. From the fits the Lorentzian HWHM was determined as function of N2 pressure. Pressure broadening coefficients for m between -33 and +34 were obtained with uncertainties of 5.8%. The results are compared to earlier published N2 broadening coefficients and our measurements in the 2-0 band of 12C16O. To our knowledge this is the first investigation of 13CO pressure broadening.