Abstract
N2 broadening coefficients have been measured for 33 lines in the ν3 fundamental band and 21 lines in the ν3–ν1 band of C32S2, using a tunable diode–laser spectrometer. These lines with J values ranging from 0 to 78 in the ν3 band and from 4 to 70 in the ν3–ν1 band are located in the spectral ranges 1514–1548 and 853–887 cm−1, 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.
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