Abstract
We investigated the photon-stimulated desorption of Ne metastable atoms from Ar adsorbed on Ne solids. Desorption was observed even for Ar coverage of 200 monolayers even though the yield decreased with the increase in adsorption of Ar atoms. This result suggests that the mixed Ar–Ne layers formed on the Ne solid via Ar adsorption, instead of the Ar-covered layers. In addition, we found that the kinetic energies of the desorbed metastable atoms depend sensitively on the Ar adsorption. A simple estimation using the experimentally obtained results and calculations of the cohesive energies for an Ar–Ne mixed system qualitatively reproduced the kinetic energy shifts.
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