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- W2324376523 abstract "Laser-induced fluorescence to the electronic ground state $(X){1}^{phantom{rule{0.16em}{0ex}}1}{ensuremath{Sigma}}^{+}$ of LiNa has been recorded by a Fourier-transform spectrometer. Optical excitations of the LiNa molecules into the $(A)2{}^{phantom{rule{0.16em}{0ex}}1}{ensuremath{Sigma}}^{+}$ state were performed with different dye lasers. The spectra showed fluorescence progressions up to ${v}^{ensuremath{'}ensuremath{'}}=44$ of the singlet ground state covering 99.9$%$ of the potential well. However, searches for fluorescence into the triplet ground state $(a)1{}^{phantom{rule{0.16em}{0ex}}3}{ensuremath{Sigma}}^{+}$ induced by spin-orbit coupling in the excited system $(b){1}^{phantom{rule{0.16em}{0ex}}3}ensuremath{Pi}$--$(A)2{}^{phantom{rule{0.16em}{0ex}}1}{ensuremath{Sigma}}^{+}$ were not successful. The potential energy curve of the singlet ground state was determined by direct potential fits with a data set of about 8200 assigned lines using two distinct analytical potential representations. In addition, the isotopologue ${}^{6}text{Li}{}^{23}text{Na}$ was studied for a possible need of Born-Oppenheimer corrections by simultaneous fits of both observed isotopologues from ${}^{6}$Li and ${}^{7}$Li. Finally, new data on Feshbach resonances from cold-atom experiments at Heidelberg were included for improving the potential description around the dissociation energy for both electronic states $(X)1{}^{phantom{rule{0.16em}{0ex}}1}{ensuremath{Sigma}}^{+}$ and $(a)1{}^{phantom{rule{0.16em}{0ex}}3}{ensuremath{Sigma}}^{+}$ of the atom-pair ground-state asymptote." @default.
- W2324376523 created "2016-06-24" @default.
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- W2324376523 date "2012-04-27" @default.
- W2324376523 modified "2023-10-17" @default.
- W2324376523 title "(<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>X</mml:mi></mml:math>)1<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow /><mml:mn>1</mml:mn></mml:msup><mml:mspace width=-0.16em /><mml:msup><mml:mi>Σ</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:mrow></mml:math>state of LiNa studied by Fourier-transform spectroscopy" @default.
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- W2324376523 doi "https://doi.org/10.1103/physreva.85.042720" @default.
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