N broadening coefficients have been measured for 33 lines in the ν fundamental band and 21 lines in the ν-ν band of CS, using a tunable diode-laser spectrometer. These lines with J values ranging from 0 to 78 in the ν band and from 4 to 70 in the ν-ν band are located in the spectral ranges 1514-1548 and 853-887 cm, respectively. The collisional widths are obtained by fitting the spectral lines with a Voigt and a Rautian profile. Semiclassical calculations of these broadening coefficients have been performed by considering, in addition to electrostatic interactions, successively the atom-atom Lennard-Jones model and a simple formulation for the anisotropic dispersion forces leading to more satisfactory results.
|Number of pages||8|
|Journal||Journal of molecular spectroscopy|
|Publication status||Published - 1 Dec 1999|