Absolute intensity measurements in the ν3 band of carbon disulphide

Abstract

The aim of this paper is to determine with accuracy the band strength of the strong ν3 fundamental band of carbon disulphide CS2. By diode-laser spectroscopy, we have measured line by line the intensities for the 12C32S2 form by the equivalent width method and by the line profile fitting method. To confirm our results, we have also measured 30 lines for the 13C32S2 isotopic species using a sample of CS2 in natural abundance. We have obtained for the band strength S0 v = 1417 cm−2 atm−1 at 296 K and this value is in good agreement with the values from the literature.