Abstract
Abstract Total current spectroscopy (TCS) has been used to probe the {100} surface of a single crystal of vanadium. Primary electron energies were in the range 0–10 eV. Surface potential measurements are described for desorption of residual gas between room temperature and 1500°C. A value for the work function of vanadium is obtained from comparative measurements using evaporated layers of silver. Structure in the TCS curves is a consequence of both the reflection properties of the vanadium surface and excitation of interband transitions in the solid. Additional structure which appears after adsorption is due to resonances in the adsorbed layer. A method is described for the extraction of this component from the spectra and a simple analysis given in terms of multiple electron scattering. In this way estimates of the layer thickness d and the average potential V can be made.
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