TOF spectra on with of Ag deposited at for two different scattering conditions: (a) exit normal to the surface and (b) close to specular conditions (exit angle 60°).
Li neutral fraction dependence on Ag coverage for small clusters deposited at a rate of (a) and (b). In each case the insets (i), (ii), and (iii) show the TOF spectra for neutrals and ions at the indicated coverage. (c) Li neutral fraction dependence on Ag coverage for different cluster sizes.
(a) Exit energy dependence of the Li neutral fraction for different Ag cluster sizes. The insets show the TOF spectra for some incident energies. (b) Energy dependence of the Li neutral fraction for a Ag film on (LEED pattern obtained after the deposition shown in the inset) and a bulk polycrystalline Ag sample. In both cases, the continuous lines show the calculated neutral fraction with a jellium model of a surface with the specified work function.
(a) TOF spectra ( incident ions) on with of Au deposited at as a function of time. (b) Li neutral fraction dependence on Au clusters supported on (deposition rate ). The insets (i), (ii), and (iii) show the TOF spectra for neutrals and ions at the indicated coverage.
Energy dependence of the Li neutral fraction for Au clusters on for small Au clusters (a), and large Au clusters (b). The small clusters are expected to have a mean diameter of approximately and the larger ones of at least , according to Lai et al. (Ref. 15). The inset (i) shows the original spectra at the indicated coverage.
Energy dependence of the Li neutral fraction for a thick Au film on compared with the results of a bulk Au(111) single crystal (from Ref. 36).
Calculated Li neutral fraction for a free-electron metal as a function of the beam exit energy for different values of the surface work function. The ion leaves the surface in the normal direction.
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