Oxidation effects on the spectrum of the slow SEE peak in polycrystalline Mg

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Abstract
The fine structure in the slow SEE peak of polycrystalline Mg has been observed during the progressive build up of oxygen on a clean Mg surface. Many changes occurred in the fine structure even before the first trace of oxygen was observed in the Auger spectrum, indicating that the method may well be more sensitive to initial chemisorption changes than the corresponding Auger effect. Oxidation effects on the gross features of the slow peak are also presented and these are compared with recent published work. In addition, characteristic energy loss measurements were made during the slow oxidation.