Abstract
The change in work function of a Ni(111) surface resulting from the adsorption of CO is measured continuously. Work function change is related to absolute coverage through thermal desorption measurements and LEED patterns. From the coverage-time curve, the sticking probability is determined, with an initial sticking probability of 0.91. From the relation between work function change and coverage, the dipole moment of an adsorbed CO molecule is determined to be 0.28 Debye with a negative end of the molecule projecting outward from the surface.
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