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Title:Observation And Laser Spectroscopy Of Ytterbium Monomethoxide, Yboch3
Author(s):Augenbraun, Benjamin
Contributor(s):Doyle, John M.; Le, Anh T.; Sawaoka, Hiromitsu; Frenett, Alexander; Lasner, Zack; Steimle, Timothy
Subject(s):Mini-symposium: Precision Spectroscopy for Fundamental Physics
Abstract:We describe a laser spectroscopic study of ytterbium monomethoxide, a species of interest to search for time-reversal symmetry violation using laser-cooled molecules. We have performed measurements of vibrational structure in the low-lying electronic states, vibrational branching ratios for several electronically excited vibronic states, and radiative lifetimes of low-lying electronic states. Both laser-induced fluorescence and dispersed fluorescence spectra have been recorded and analyzed. In addition, we have recorded the rotationally-resolved high-resolution excitation spectrum of the $\tilde{A}\,^2E_{1/2} \leftarrow \tilde{X}\,^2A_1$ band. \textit{Ab initio} calculations aided the assignment of vibronic emission bands and provide insight into the electronic and vibrational structure. We compare the structure of YbOCH$_3$ to the isoelectronic species YbF and YbOH, as well as to the previously studied alkaline-earth monomethoxides. Finally, we discuss how our results open a path to increased sensitivity to P- and/or T-violating physics in future measurements.
Issue Date:2021-06-24
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Date Available in IDEALS:2021-09-24

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