HIGH RESOLUTION LASER SPECTROSCOPY OF THE $AO^{+} - XO^{+}$ SYSTEM OF Ybs
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Date
2000
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Publisher
Ohio State University
Abstract
The first spectroscopic observation of YbS has been made using visible laser absorption spectroscopy. The $A0^{+} - X0^{+}$ electronic transition of $^{172}Yb^{32} S, ^{174}Yb^{32}S$ and $^{176}Yb^{32}S$ has been recorded using the output of a Coherent 699-29 ring dye laser with selective detection of fluorescence. Spectra of the 0-0, 0-1, 1-1, 1-2, 2-2 and 2-3 bands were recorded with a measurement precision of approximately $0.003 cm^{-1}$, and from perturbations observed in the structure of the 2-2 and 2-3 bands, it was concluded that a level crossing occurs in the $A0^{+} v=2$ level, In total, over 1500 line positions have been measured, assigned and employed in least-squares fits of the molecular parameters. The deperturbation and rotational analysis of the $A - $X system will be discussed.
Description
Author Institution: Department of Chemistry, Dalhousie University; Physics Department, University of New Brunswick