Diode-laser spectra of isotopic carbon disulfide 13CS2 in the region of 12 μm

By using a tunable diode-laser spectrometer, 10 transitions have been observed in the ν3-ν1 region of 13CS2 with a sample enriched in 13C. One band of 13C32S33S and four bands of 13C32S34S have also been analyzed. The molecular constants of 13C32S2 have been determined by a general rovibrational analysis including all known data.