26 October 2004 Seven years of x-ray fluorescence computed microtomography
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Since 1998 we have developed X-Ray fluorescence tomography for microanalysis. All aspects were tackled starting with the reconstruction performed by FBP or ART methods. Self-absorption corrections were added and combined with Compton, transmission and fluorescence tomographies to obtain fully quantitative results. Automatic "smart scans" minimized overhead time scanning/aligning non-cylindrical objects. The scans were performed step-by-step or continuously with no overhead time. Focusing went from 5 to 1 micron range, using FZP or CRL lenses, and finally KB bent mirrors which yield sub-micron high intensity beams. Recently, we have performed the first quantitative 3D fluo-tomography by helical scanning. We are now studying energy dependent fluo-tomography for chemically-sensitive imaging of the internal structure of samples. This chronology yielded the present level of sophistication for both experiments and data treatment and finally a method ready for wide dissemination among scientists.
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Alexandre S. Simionovici, Bruno Golosio, Marina V. Chukalina, Andrea Somogyi, Laurence Lemelle, "Seven years of x-ray fluorescence computed microtomography", Proc. SPIE 5535, Developments in X-Ray Tomography IV, (26 October 2004); doi: 10.1117/12.558948; https://doi.org/10.1117/12.558948

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