Abstract
We report here an analysis of the B1Πu → X1Σ+g band system of the sodium dimer. The body of data includes laser-induced emission of Na2 consisting of discrete molecular fluorescence (107 fluorescence series) excited by visible lines from an argon ion laser and rotational relaxation lines for strong transitions. In order to enlarge the data set of transitions within this band system, which cover both X1Σ+g and B1Πu states up to dissociation, the results were combined with spectroscopic experimental data available in the literature. The obtained Dunham coefficients were used to derive the corresponding molecular potentials using basically the RKR method. Hybrid potential energy curves for the X1Σ+g and B1Πu states have been checked by solving numerically the radial Schrödinger equation observing a good agreement with the experimental data.
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