PROBING THE ELECTRONIC STRUCTURE OF YbCl USING LASER SPECTROSCOPY
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Date
1999
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Ohio State University
Abstract
The high resolution spectrum of the $A^{2} \Pi-X^{2}\Sigma^{+}$ transition of YbCl has been recorded near 550 nm using laser excitation spectroscopy. The output of a Coherent 699-29 ring dye laser operating in single frequency mode was used to obtain Doppler-limited spectra. Selective detection of laser induced fluorescence was utilized to record spectra with an accuracy of $0.003 cm^{-1}$. Unequivocal assignment of the rotational numbering was obtained using resolved fluorescence spectra. Data from two isotopomers, ${^{172}}Yb^{35}Cl$ and ${^{174}}Yb^{35}Cl$, have been employed in a least-squares fit of sets of molecular constants. The rotational analysis of the $A - X$ system will be discussed.
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Author Institution: Department of Chemistry, Dalhousie University