MOLECULAR PARAMETERS FOR CARBON DIOXIDE BANDS IN THE $3.73 - 4.17 \mu m$ SPECTRAL REGION

Line positions and intensities of carbon dioxide transitions in the $2395-2680 cm^{-1}$ spectral interval have been determined from long-path, low-pressure absorption spectra recorded at $0.01-cm^{-1}$ resolution and at room temperature using the Fourier transform spectrometer in the McMath solar telescope complex at Kitt Peak National Observatory. A total of 17 bands belonging to the ${^{12}}C{^{16}}O_{2}, {^{12}}C{^{16}}O{^{18}}O, {^{12}}C{^{16}}O{^{17}}O$, and ${^{13}}C{^{16}}O{^{18}}O$ molecular species have been identified and unambiguous assignments have been made for over 1000 lines. Absolute intensities have been derived for unblended lines of the various bands using a nonlinear least squares spectral fitting technique. For these measurements, the gas pressures ranged from 3 to 10 Torr in a 384 m absorption path. The measured intensities have been analyzed to determine vibrational band intensities and F-factor coefficients for the bands.