Abstract
The dependence of ionization probability on the work function of the metal surface (W(110)) for chemisorbed Cs sputtering from the surface has been calculated. The interaction potentials are obtained with the Diatomics in Molecules procedure and supplemented with surface properties in order to reproduce the properties of chemisorbed Cs. Good agreement with experimental results is achieved and a dramatic reduction in emerging ions is found to occur when the Fermi level is 0.36 eV above the ionization potential of Cs.
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