THE INFRARED-EMISSION SPECTRA OF LIF AND HF

H G HEDDERICH, C I FRUM, R ENGLEMAN, P F BERNATH

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Abstract

The high resolution infrared spectrum of LiF has been measured in emission with the McMath Fourier transform interferometer at Kitt Peak. A total of 800 lines with v = 1 --> 0 to v = 8 --> 7 of the main isotopomer, 7LiF, and 250 lines with v = 1 --> 0 to v = 3 --> 2 of the minor isotopomer, 6LiF, were observed. These ro-vibrational transitions and the pure rotational transitions from the literature were fit to a set of Dunham coefficients Y(ij) and a set of mass-reduced Dunham coefficients U(ij). The same spectrum shows 13 pure rotational emission transitions of HF in the vibrational ground state with J = 13 --> 12 to J = 25 --> 24. These transitions were used to determine an improved set of rotational constants for HF.

Original languageEnglish
Pages (from-to)1659-1671
Number of pages13
JournalCANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE
Volume69
Issue number11
Publication statusPublished - Nov 1991

Keywords

  • INFRARED SPECTRA
  • LIF
  • HF
  • ROTATIONAL-CONSTANTS
  • ISOTOPE DEPENDENCE
  • LASER SPECTRA
  • SPECTROSCOPY

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