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Raman Scattering from Molecular Rubidium

Volume 32, Number 2 (April 1978) Page 240-243

Baierl, P.; Kiefer, W.

Most of the alkali dimers have been the subject of numerous spectroscopic investigations. For the lighter homonuclear diatomic molecules Li2, Na2, and K2 spectroscopic constants have been precisely determined by laser excited photoluminescence spectroscopy. However, because of relatively small vibrational and rotational constants of the heavier species, the ground state molecular parameters and potential curves for Rb2 and Cs2 are not so easy to determine. We have started to make a Raman spectroscopic study of Rb2 in order to determine independently from excited electronic state data the vibrational energy of the X1Σg+ ground state.