X-ray Microscopy
at Stony Brook (5)

1. Why Soft X-ray Microscopy
2. The Scanning Transmission X-ray Microscope
3. X-ray Lenses: Fresnel Zone Plates
4. Example: Biological Applications
5. Example: Environmental Sciences and Cluster Analysis
6. Soft X-ray Diffration and Holography
7. Acknowledgements

Example: Environmental Sciences and Cluster Analysis

Cluster analysis of an environmental science specimen where Lutetium (as a stand-in for the radionuclide Americium) was allowed to react with Hematite (which can in turn undergo colloidal transport in groundwater).

By taking images across the oxygen absorption edge, and using cluster analysis to recognize pixels with common spectra, regions with different types of incorporation of Lutetium can be identified.

Data: T. Schaefer et al., INE Karlsruhe
Analysis: M. Lerotic et al., Stony Brook.

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