Absorption spectrum of H_2S between 7200 and 7890 cm~(-1)

摘要

The high resolution absorption spectra of H_2S have been recorded in the region 7200 - 7890 cm~(-1) with the McMath Fourier transform spectrometer located at Kitt Peak National Observatory. A careful analysis of the spectra led to derivation of 1080 precise energy levels for the 1st decade interacting states of H_2~(32)S, H_2~(33)S, and H_2~(34)S isotope species. The energy levels were introduced into a least squares fit using a Hamiltonian which takes into account Coriolis, Darling-Dennison and Fermi-resonance interactions. Precise rotational and coupling parameters have been determined which reproduce the experimental energy levels within 0.0015 cm~(-1) for the main isotope species. The experimental band origin E_v= 7419.9162 cm~(-1) for the super weak (220)-(000) band was obtained for the first time from the simultaneous analysis of cold (220)-(000) and hot (220)-(010) bands. Detailed and accurate H_2S absorption line list was generated in the HITRAN format for the first decade spectral region.