Abstract
Research during this year focused on angular dependence of polarization of electrons backscattered from metallic surfaces, as a function of energy loss, using spin-polarized electron energy loss spectroscopy (SPEELS), and on dynamics of metastable He(2[sup 3]S) deexcitation at Xe-covered metallic surfaces using spin-polarized metastable deexcitation spectroscopy (SPMDS). In the SPEELS study, the data from Au, Ag, Mo, and Fe surfaces suggest that all inelastically scattered electrons underwent small-angle inelastic scattering either preceded or followed by large-angle elastic scattering that redirects the incident electron away from the target. The SPMDS study was extended from other gases to include rare=gas adsorbates on Cu(100) and Au(100) surfaces; the spectra from the Xe- metal systems are unlike hose from other systems and may provide new insights into metastable-surface interactions. (DLC)
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