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Saint-Cannat, France

Fauquet C.,CNRS Interdisciplinary Nanoscience Centre of Marseille | Dehlinger M.,CNRS Interdisciplinary Nanoscience Centre of Marseille | Jandard F.,CNRS Interdisciplinary Nanoscience Centre of Marseille | Ferrero S.,AXESS Technology | And 9 more authors.
Nanoscale Research Letters | Year: 2011

A new versatile tool, combining Shear Force Microscopy and X-Ray Spectroscopy was designed and constructed to obtain simultaneously surface topography and chemical mapping. Using a sharp optical fiber as microscope probe, it is possible to collect locally the visible luminescence of the sample. Results of tests on ZnO and on ZnWO4 thin layers are in perfect agreement with that obtained with other conventional techniques. Twin images obtained by simultaneous acquisition in near field of surface topography and of local visible light emitted by the sample under X-Ray irradiation in synchrotron environment are shown. Replacing the optical fibre by an X-ray capillary, it is possible to collect local X-ray fluorescence of the sample. Preliminary results on Co-Ti sample analysis are presented. © 2011 Stergiopoulos et al. Source

Dehlinger M.,French National Center for Scientific Research | Fauquet C.,French National Center for Scientific Research | Jandard F.,French National Center for Scientific Research | Bjeoumikhov A.,IFG GmbH | And 8 more authors.
X-Ray Spectrometry | Year: 2013

Capillary optics are used for X-ray fluorescence micro-analysis using the Cu Kα line provided by a rotating anode. The excitation beam is focused using a polycapillary lens on a Co-Ti sample. Cylindrical glass capillaries of various diameters are fitted to the X-ray detector (Energy Dispersive X-Ray (EDX) analyzer) and displaced along the irradiated zone of the sample. The fluorescence is studied as a function of capillary position. Good agreement is found between experimental and calculated lateral widths of the fluorescence collection, taken into account the cylindrical capillary critical angles relevant in the experiment. The influence of the cylindrical capillary diameter on the signal level detected is studied to estimate the possibility of lateral resolution increase of X-ray fluorescence technique both in-lab and in synchrotron environment. © 2013 John Wiley & Sons, Ltd. Source

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