Abstract
Low-energy electron stimulated desorption (ESD) and surface modifications of CaF2 and BaF2 single crystals were experimentally studied at different surface temperatures. A technique based on the dependence of the surface composition on the electron irradiation dose was applied to determining the ESD cross section. The surface composition was measured by Auger electron spectroscopy (AES). Surface topography was examined by atomic force microscopy (AFM). The ESD mechanisms for fluorides were discussed.
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