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SPECTROSCOPY OF THORIUM MONOXIDE, ThO; E(O$^{+}$),F(O$^{+}$),-X$ ^{1}\Sigma^{+}$ BANDS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/49267

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Title: SPECTROSCOPY OF THORIUM MONOXIDE, ThO; E(O$^{+}$),F(O$^{+}$),-X$ ^{1}\Sigma^{+}$ BANDS
Creators: Wang, Fang; Steimle, Timothy C.; Heaven, Michael
Issue Date: 2011
Abstract: Thorium monoxide, ThO, has recently attracted interest as a possible venue for the determination of the electric dipole moment of the electron, $d_{e}$,{\textbf{43}} 074007/1 2010.}. Here we report on the results of an optical Stark study of the $E(O$^{+}$)-$X$^{1}\Sigma^{+}$(1,0) band and the field-free study of the $F(O$^{+}$)-$X$^{1}\Sigma^{+}$(0,0) band, {\textbf{32}} 602 1985.}. A supersonic molecular beam of ThO was generated using a laser ablation technique and probed using laser excitation spectroscopy. The determined values for the permanent electric dipole moments, $\mu_{el}$, for the $E(O^{+})(v=1)$ and $X^{1}\Sigma^{+}(v=0)$ vibronic states were determined to be 3.534$\pm$0.010 D and 2.782$\pm$0.012 D, respectively ,{\textbf{134}} 031102 2011.}. The dispersed laser induced fluorescence resulting from the excitation of the $E(O$^{+}$)-$X$^{1}\Sigma^{+}$(1,0) and $F(O$^{+}$)-$X$^{1}\Sigma^{+}$(0,0) bands have been recorded and the results are compared to Franck-Condon predictions. The radiative lifetimes for the $E(O$^{+}$)-$X$^{1}\Sigma^{+}$(1,0) band $F(O$^{+}$)-$X$^{1}\Sigma^{+}$(0,0) bands were determined.
URI: http://hdl.handle.net/1811/49267
Other Identifiers: 2011-RA-03
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