# INTERMOLECULAR POTENTIAL OF EXCITED ATOMS AND MOLECULES FROM MATRIX SHIFTS.

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 Title: INTERMOLECULAR POTENTIAL OF EXCITED ATOMS AND MOLECULES FROM MATRIX SHIFTS. Creators: Roncin, J.- Y. Issue Date: 1969 Publisher: Ohio State University Abstract: The experimental shifts and broadening of far u.v. transitions of trapped species have so far permitted only qualitative conclusions concerning the dimensions of the excited $states.^{1}$ In particular the matrix isolation technique has strikingly shown the profound difference in behavior of trapped molecules according to the nature of the transition; valence transitions are little affected whereas Rydberg transitions are strongly $perturbed.^{1, 2}$ Enough experimental data are now available to attempt a quantitative estimation of the dimension of some excited states on the basis of a simple Lennard-Jones intermolecular potential $V = re[(\frac{\sigma}{r})^{12} - (\frac{\sigma}{r})^{6}]$. The values of $\sigma$ and $\epsilon_{i}$, computed for some excited states of Xe, Kr, Hg, CO, NO and $N_{2}O$, are given below: [FIGURE] During the year 1969, J.-Y. Roncin has been a Postdoctoral Fellow at the Division of Pure Physics, National Research Council of Canada, Ottawa, Canada. Description: $^{1}$ J.-Y. Roncin, J. Mol. Spectry, 26, 105 (1968). $^{2}$ J.-Y. Roncin, N. Damany and B. Vodar, Chem. Phys. Letters, March 1969. Author Institution: Laboratoire des Hautes, Pressions, C.N.R.S., Bellevue France and National Research Council of Canada Division of Pure Physics URI: http://hdl.handle.net/1811/15770 Other Identifiers: 1969-N-10