# PRECISE EXPERIMENTAL DETERMINATION OF LONG RANGE PARAMETERS FROM DIATOMIC MOLECULAR SPECTRA: CASE OF $I_{2}$ AND $LI_{2}$

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 Title: PRECISE EXPERIMENTAL DETERMINATION OF LONG RANGE PARAMETERS FROM DIATOMIC MOLECULAR SPECTRA: CASE OF $I_{2}$ AND $LI_{2}$ Creators: Martin, F.; Bacis, R.; Cerny, D.; Churassy, S.; Vergès, J. Issue Date: 1984 Publisher: Ohio State University Abstract: The experimental determination of the usual long range parameters $C_{5}, C_{6}, C_{8}, \ldots$ of diatomic molecules, is difficult and lacks precision due to strong correlations. Nevertheless their precise determination is particularly useful since it can allow in principle the calculation of the related parameters of the other molecular electronic states with the same configuration. From Fourier Transform high resolution spectra using corrected extrapolations from Le Roy's theory and calculations from RKR potential curves it is possible to obtain determinations which are mutually consistent. Comparison of these results with ab initio calculations have been made in the cases of $Li_{2}$ and $I_{2}$. Description: Author Institution: Laboratoire de Spectrom\'{e}trie Ionique et Mol\'{e}culaire, 43 boulevard du 11 Novembre 1918; Laboratoire Aim\'{e} Cotton, C.N.R.S. II URI: http://hdl.handle.net/1811/16570 Other Identifiers: 1984-FB-10