The B²Σ+ - X²Σ+ System of SrF: Precise Spectroscopic Constants from a Combined Fit of Microwave and sub-Doppler Optical Spectra

Wolfgang Ernst, J. O. Schröder

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Doppler-free polarization spectroscopy has been used to measure 295 lines in the (0.0), (1.1) and (2.2) bands of the B 2Σ+-X 2Σ+ system of SrF. These optical data were combined with the results of separate microwave measurements of the X 2Σ+ state in a weighted least-squares fit. It is shown that the accuracy of spectroscopic constants of the B 2Σ+ state is remarkably improved by the reduction of the upper-state—lower-state correlations. A more reliable determination of the vibrational dependence of rotational and spin—rotation parameters became possible.
Original languageEnglish
Pages (from-to)363-368
JournalChemical Physics
Issue number3
Publication statusPublished - 1983
Externally publishedYes

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