Abstract

The ground-state rotational-vibrational energies, E/sub T/, for diatomic molecules adsorbed on plane surfaces were calculated assuming a Morse potential for the surface-molecule interaction. For the moiecular hydrogens it was found that the trend of E/sub T/ as a function of surface barrier, both in units of 8 e (as Fe/sup 59 /sup 2/I/h/sub 2/, is nearly the same for all isotopes. The correlation diagram for the heteronuclear molecules deviates somewhat from that of the homonuclears, the magnitude of the deviation depending on the shift of the center of mass. (auth)

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