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- W2045321331 abstract "The absorption spectrum of the van der Waals molecule KAr has been recorded between 12 870 and 13 040 cm−1 by means of high-resolution laser excitation spectroscopy in a supersonic jet expansion. About 1600 molecular absorption lines could successfully be assigned to the rovibrational structure of the electronic transition A 2Π←X 2Σ+ of 39KAr. In addition, a few absorption lines due to the isotopomer 41KAr have been detected. Spectroscopic parameters have been obtained for vibrational levels 0...3 of X 2Σ+ and 6...11 of A 2Π. Additional experimental information was provided by observing the spectral distribution of the fluorescence. The interatomic potentials of the X 2Σ+ and the A 2Π states have been derived from the experimental data by means of a fully quantum-mechanical approach using suitable analytical functions. Our final results for equilibrium distance Re and well-depth De are 5.404(5) Å and 40.1(6) cm−1 for X 2Σ+, 3.37(3) Å and 405(15) cm−1 for A 2Π1/2, and 3.34(3) Å and 427(15) cm−1 for A 2Π3/2. In addition, we could deduce qualitative information on the B 2Σ+ interaction potential from our experimental data yielding Re=7.10 Å and De=23 cm−1 as preliminary values." @default.
- W2045321331 created "2016-06-24" @default.
- W2045321331 creator A5049138544 @default.
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- W2045321331 date "1996-01-15" @default.
- W2045321331 modified "2023-10-11" @default.
- W2045321331 title "Determination of the K–Ar interaction potential in the <i>X</i>Σ and <i>A</i>Π state from laser spectroscopic data" @default.
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- W2045321331 doi "https://doi.org/10.1063/1.470816" @default.
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