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OPTICAL STARK SPECTROSCOPY OF THE $\tilde{A}$$^{2}$$\Pi$- $\tilde{X}$$^{2}\Sigma^{+}$ BAND OF BaOH

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/49654

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Title: OPTICAL STARK SPECTROSCOPY OF THE $\tilde{A}$$^{2}$$\Pi$- $\tilde{X}$$^{2}\Sigma^{+}$ BAND OF BaOH
Creators: Frey, Sarah E.; Steimle, Timothy C.
Issue Date: 2011
Abstract: Transitions of the $\tilde{A}$$^{2}$$\Pi$- $\tilde{X}$$^{2}\Sigma^{+}$ band system of barium monohydroxide, BaOH, were observed and recorded from 11483-11485 cm$^{-1}$ and 12041-12044 cm$^{-1}$. The features were readily identified using the results of the Doppler-limited measurements \textbf{252}, 31 (2008)}. The laser induced fluorescence (LIF) spectrum was analyzed to give optimized field-free excited state parameters. The parameters for the $\tilde{X}$$^{2}\Sigma^{+}$ state were constrained to the previously determined values \textbf{205}, 415 (1993)}. The permanent electric dipole moments for the $\tilde{X}$$^{2}\Sigma^{+}$ and $\tilde{A}$$^{2}$$\Pi$ states have been determined from the analysis of the optical Stark spectra for the R$_{21}$(0.5), Q$_{21}$(1.5), and R$_{2}$(0.5) lines. The obtained values were $\mu$($\tilde{X}$$^{2}\Sigma^{+}$)= 1.426(38)D and $\mu$($\tilde{A}$$^{2}$$\Pi$)= 0.477(7) D. The results are compared with predicted values from semi-empirical models and those for CaOH and SrOH \textbf{96}, 2556 (1992)}.
URI: http://hdl.handle.net/1811/49654
Other Identifiers: 2011-MF-09
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