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Surface Characterization by X-Ray Techniques

Published online by Cambridge University Press:  06 March 2019

Robert L. Park
Robert L. Park*
Affiliation:
University of Maryland College Park, MD 20742
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Abstract

The filled states in the surface region of a solid can be probed by monochromatic x-rays. The spectral distribution of photoelectrons near the high kinetic energy limit is related to the density of valence band states. Complementary information regarding the unoccupied states is obtained from the spectral distribution of bremsstrahlung, emitted bv radiative capture of monoenergetic electrons, near the short wavelength limit. In soft x-ray appearance potential spectroscopy, the near-threshold excitation probability of a core level is a measure of the local density of unfilled states associated with a particular element. In each case the sensitivity to the surface results from the short mean free path for inelastic scattering of electrons. Unfortunatelv this has severe consequences for the interpretation of line shapes.

Type
Soft X-Ray and Surface Analysis
Information
Advances in X-Ray Analysis , Volume 19: Twenty-Fourth Annual Conference on Applications of X-ray Analysis, August 6-8, 1975 , 1975 , pp. 607 - 625
Copyright
Copyright © International Centre for Diffraction Data 1975

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