Complex atomic fine structure in the phase domain: exciting opportunities and challenges

X-ray Absorption Spectroscopy has been one of the most powerful tools for probing atomic and molecular structures of materials. However, the measured fine structures in the absorption domain do not have adequate dimensionalities to extract three-dimensional structural information of the material of interest. A technique that allows accurate measurements of atomic fine structure in both the absorption and phase domains will open exciting opportunities in a wide range of fundamental and applied research. In this presentation, we will describe a new technique for determining simultaneously the real and imaginary components of the complex atomic form factor. The technique used Fourier Transform Holography with an extended reference and applicable to both crystalline and amorphous samples. Details of an application of the technique in spectroscopy mode to obtain the X-ray Complex Fine Structure across the copper K-edge will be discussed. © The Authors

Keywords

Fine structure, Absorption, Fourier transformation, Holography, Crystallization, Amorphous state

Citation

Tran, C. Q., Chantler, C. T., Kirk, T., Dao, M. H., Di Pasquale, P., Ceddia, J., Barnea, Z., de Jonge, M., Kewish, C., & Paterson, D. (2021). Complex atomic fine structure in the phase domain: exciting opportunities and challenges. Poster presented to the IUCr 2021, 25th Congress of the International Union of Crystallography, 14-22 August 2021, Prague, Czech Republic. In Acta Crystallographica Section A, A77, C1267. doi:10.1107/S0108767321084476

URI

https://doi.org/10.1107/S0108767321084476
https://apo.ansto.gov.au/handle/10238/15556

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