Abstract
The surfaces of platinum single crystals, of carbon deposits on platinum and of pyrographite are examined by secondary electron spectroscopy under 100 eV electron excitation. The spectra contain characteristic peaks in the range 0–30 eV, which are interpreted as band-like in origin. The effects of gas adsorption, of the reconstruction at Pt(100), of the temperature and of ion bombardment induced disorder are reported. The secondary electron spectrum provides a criterion for distinguishing between amorphous and graphitic carbon surfaces. By contrast with the Auger spectrum, it is sensitive to the degree of crystalline order at the surface over distances of 10–100Å.
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