Work functions of gold and silver films. Surface potentials of mercury and xenon

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Abstract
Mercury adsorption on annealed films of gold and silver deposited on glass in a mercury-pumped system gives surface potentials rising smoothly with increasing coverage to maximum values of +0.80 and –0.16 V respectively. The final surface is believed to be mercury-like and this leads to work functions of 5.3 and 4.4 eV for the bare gold and silver films. Pre-adsorption of mercury at room temperature changes the surface potential of xenon from 0.46 to 0.22 V on gold and from 0.47 to 0.25 V on silver. It is considered that mercury contamination of the original films is negligible.

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