Abstract
The angular distribution of Auger electrons from clean Fe(100) surface and from Fe(100) surfaces having various adsorbed structures has been investigated by means of a simple new method of Auger electron spectroscopy using a combined LEED and scanning photoelectron multiplier system. The experimental results indicate that the typical three types of angular distribution of Auger electrons are existed; 1) the lobular distribution due to the diffraction effect in the case of the 45 eV Fe Auger electron emission from well-ordered surfaces, 2) the cosine squared distribution in the case of the 598 eV Fe Auger electron emission, 3) the cosine distribution in the case of Auger electron emission from adatoms located at the outermost surface, for example, S Auger electrons from the Fe(100) c(2×2)–S and the Fe(100)–disordered–H2S structures.
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