Laser-induced fluorescence of Pb2 |
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Authors: | H Sontag R Weber |
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Institution: | Fakultät für Physik, Universität Konstanz, 7750 Konstanz, West Germany |
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Abstract: | Pb2, which occurs in lead vapor, was studied by the technique of laser-induced fluorescence using single-mode Ar-laser excitation. The fluorescence observed could be classified into the F-X system. Ten progressions involving vibrational quantum numbers v′ = 0?9 and v″ = 0?22 were analyzed. Including collision-induced lines, rotational quantum numbers from J = 25 to J = 300 were observed. The vibrational constants and the numbering of the states had to be reassigned. For the first time rotational constants were determined for the Pb2 molecule. The internuclear distances of 208Pb2 in the F and X state are and , respectively. Using the constants derived RKR potentials and Franck-Condon factors were calculated, which confirmed the vibrational assignments and constants. |
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