NVV auger spectra from W ( 100 )
نویسنده
چکیده
The NVV Auger spectrum from a clean W(lOO) surface has been measured in the second derivative, d N(E)I dE , mode to enhance fine structure. This measurement is compared with spectra generated from both the self-convolution of the tungsten valence-band bulk density of states (obtained from a relativistic APW energy band calculation) and a "restricted convolution" in which only transitions involving electrons from the same valence energy are allowed. The restricted convolution for a model of the Auger process in which both N 6 VV and N7 VV transitions contribute offers the best match of theory and experiment. No distinct evidence of Auger emission involving the surface resonance present on W(IOO) is observed. Effects of H2 and 0 2 adsorption on the Auger spectrum of the W(lOO) surface are reported.
منابع مشابه
Meteorological Register for September, 1816
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