HIGH RESOLUTION INFRARED SPECTRA OF HIGH TEMPERATURE DIATOMICS
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Date
1983
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Ohio State University
Abstract
A tunable diode laser has been used to mesure the spectra of a number of molecules that are difficult to observe in the gas phase at room temperature. Measurements have been made on KF, LiF, SnO, PbS, and other species that absorb between $828 cm^{-1}$ and $880 cm^{-1}$. Temperatures between 1000 k and 1425k were used. Either $\Delta v = 1$ or $\Delta v = 2$ transitions were observed, depending on the match between the molecular vibrational frequency and the available diode laser element. The spectra were fit directly to a Dunham potential function by means of a non-linear least-squares program. A single potential function with a mass dependent $B_{e}$ and $w_{e}$ has been used to fit the spectra for several isotopic species.
Description
Author Institution: Molecular Spectroscopy Division, National Bureau of Standards