Recent Advances In The Calculation Of X-Ray Optical Constants From X-Ray Attenuation Measurements

John H Barkyoumb; D Y Smith

doi:10.1117/12.945486

11 July 1988 Recent Advances In The Calculation Of X-Ray Optical Constants From X-Ray Attenuation Measurements

John H Barkyoumb, D Y Smith

Proceedings Volume 0911, X-Ray and Vacuum Ultraviolet Interaction Data Bases, Calculations, and Measurements; (1988) https://doi.org/10.1117/12.945486
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Dispersion analysis and sum rules have been used for many years to anal1yze experimental x-ray absorption data and to determine scattering factors from this data. It has been noted that there is disagreement between previously tabulated absorption data and well-known sum rules. There is also substantial disagreement between experimentally determined scattering factors and those that are predicted from scattering theory. We will show that the combined tools of sum rules and dispersion analysis can be used to guide one in determining where corrections need to be made in existing absorption data. Experimentally determined scattering factors can be taken into account in this analysis by the use of subtracted dispersion relations. This provides a check on the consistency of the absorption data used in the dispersion analysis.

Citation Download Citation

John H Barkyoumb and D Y Smith "Recent Advances In The Calculation Of X-Ray Optical Constants From X-Ray Attenuation Measurements", Proc. SPIE 0911, X-Ray and Vacuum Ultraviolet Interaction Data Bases, Calculations, and Measurements, (11 July 1988); https://doi.org/10.1117/12.945486

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