Revised molecular parameters for 32SO2 and 34SO2 from high resolution study of the infrared spectrum in the 7–8μm wavelength region

摘要: Abstract The absorption spectrum of SO 2 has been studied with 2 MHz instrumental resolution in the wavenumber range 1315 – 1395 cm - 1 , using a difference frequency spectrometer based on diode lasers for 1300 and 1550 nm telecom bands. Initially, Lorentz broadening parameters are determined, at pressures up to 400 Pa, 545 lines covering lower state J 60 K 14. Using this information conjunction spectra recorded 100 200 Pa line strength is subsequently determined 395 ( 0 ) → band 32 170 from hot 98 34 dipole moments derived all three For band, positions 178 transitions measured merged previously published data produce an improved set Hamiltonian state, most recent model .