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Solving self-absorption in fluorescence.

Ryan M Trevorah1, Christopher T Chantler1, Martin J Schalken1

  • 1School of Physics, University of Melbourne, Australia.

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|July 19, 2019
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Summary
This summary is machine-generated.

This study presents a new method to correct self-absorption in X-ray absorption spectroscopy (XAS) fluorescence measurements. This approach enhances data accuracy, enabling deeper scientific insight.

Keywords:
X-ray absorption fine structure (XAFS)X-ray absorption spectroscopy (XAS)fluorescenceself-absorptionsoftware and modelling

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Area of Science:

  • Materials Science
  • Atomic and Molecular Physics
  • Analytical Chemistry

Background:

  • X-ray absorption spectroscopy (XAS) commonly measures fluorescence photons.
  • Self-absorption of fluorescence photons is a major systematic error in XAS.
  • This error compromises data accuracy, analysis, and scientific insight.

Purpose of the Study:

  • To develop a detailed self-consistent method for correcting self-absorption and attenuation in fluorescence X-ray measurements.
  • To provide a general solution applicable to various experimental techniques detecting fluorescence or scattered radiation.

Main Methods:

  • A novel self-consistent method is presented to correct for self-absorption and attenuation.
  • A software package has been developed based on this method.
  • The method is validated for fluorescence X-ray measurements.

Main Results:

  • The developed method effectively corrects for self-absorption and attenuation in fluorescence X-ray data.
  • Processed data exhibits high intrinsic accuracy.
  • Accurate data allows for better modeling of experimental features.

Conclusions:

  • The new method offers a general solution for improving fluorescence X-ray measurements.
  • Enhanced data accuracy leads to deeper potential scientific insight.
  • The software package facilitates broader application across different experimental approaches.