Abstract
In the last years Anomalous Small-Angle X-ray Scattering became a precise quantitative method resolving scattering contributions two or three orders of magnitude smaller compared to the overall small-angle scattering, which are related to the so-called pure-resonant scattering contribution. Additionally to the structural information precise quantitative information about the different constituents of multi-component systems like the fraction of a chemical component implemented into the materials nanostructures are obtained from these scattering contributions. The application of the Gauss elimination algorithm to the vector equation established by ASAXS measurements at three X-ray energies is demonstrated for three examples from chemistry and solid state physics. All examples deal with the quantitative analysis of the Resonant Invariant (RI-analysis). From the integrals of the pure-resonant scattering contribution the chemical concentrations in nano-scaled phases are determined. In one example the correlated analysis of the Resonant Invariant and the Non-resonant Invariant (NI-analysis) is employed.
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Goerigk, G., Huber, K., Mattern, N. et al. Quantitative anomalous small-angle X-ray scattering — The determination of chemical concentrations in nano-scaled phases. Eur. Phys. J. Spec. Top. 208, 259–274 (2012). https://doi.org/10.1140/epjst/e2012-01623-2
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DOI: https://doi.org/10.1140/epjst/e2012-01623-2