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Auger Electron Spectroscopy of The CVD Diamond Surface Under Electron Exposure

Published online by Cambridge University Press:  10 February 2011

I. L. Krainsky
Affiliation:
NASA Lewis Research Center, Cleveland, OH 44135
G. T. Mearini
Affiliation:
NASA Lewis Research Center, Cleveland, OH 44135
V. M. Asnin
Affiliation:
NASA Lewis Research Center, Cleveland, OH 44135 National Research Council Associates
H. Sun
Affiliation:
Physics Department, South Dakota School of Mines and Technology, Rapid City, SD 57701-3995
M. Foygel
Affiliation:
Physics Department, South Dakota School of Mines and Technology, Rapid City, SD 57701-3995 National Research Council Associates
A. G. Petukhov
Affiliation:
Physics Department, South Dakota School of Mines and Technology, Rapid City, SD 57701-3995
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Abstract

A simultaneous study of Auger spectra and secondary electron emission from the chemical vapor deposited diamond films under extended electron beam exposure is presented. Up to a 1.2 eV increase in energy of the carbon Auger peak accompanied by the decrease of the total secondary electron yield has been found. Exposure to hydrogen has resulted in recovery of the both Auger peak position and secondary yield. First-principles electronic structure calculations have been carried out to interpret the Auger peak shift. The effect is shown to be due to a change in the surface upper-valence band local density of states of the diamond crystal which is dependent on the extent of hydrogen coverage of the surface.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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References

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