Observation and calculation of the Cs2 2 3Delta(1g) and b 3Pi(0u) states |
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Authors: | Xie Feng Li Dan Tyree Luke Li Li Sovkov Vladimir B Ivanov Valery S Magnier Sylvie Marjatta Lyyra A |
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Affiliation: | Department of Physics and Key Lab of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China. |
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Abstract: | The Cs(2) 2 (3)Delta(1g) and b (3)Pi(0u) states have been observed by infrared-infrared double resonance spectroscopy for the first time. 221 2 (3)Delta(1g)<--A (1)Sigma(u) (+)<--X (1)Sigma(g) (+) double resonance lines have been assigned to transitions into the 2 (3)Delta(1g) v=6-13 vibrational levels. Resolved fluorescence into the b (3)Pi(0u) v(')=0-48 levels has been recorded. Molecular constants and potential energy curves are determined by the global fit of the entire set of the experimental data. Theoretical potential energy curves of the 2 (3)Delta(g) and b (3)Pi(u) states have been determined in the framework of the pseudopotential method and are compared with the experimental results. |
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