Abstract

New high resolution polarization data have been obtained for the A–X band system of Li2 6,7, and new Fourier transform data for the homonuclear lithium dimers. They are combined with earlier data for Li26,6 and Li2 7,7 in the first systematic combined-isotopomer analysis of data for Li2 . This analysis of 8445 rovibrational transitions yields an improved and internally consistent set of molecular constant for the three Li2 isotopomers, and determines the electronic isotope shift and leading vibrational and rotational Born–Oppenheimer breakdown correction terms for both electronic states.

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