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Elemental mapping and microimaging by x-ray capillary optics

DOI: 10.1364/OL.33.002743 DOI Help
PMID: 19037412 PMID Help

Authors: D. Hampai (CNR-ISMN, Italy) , S. Dabagov (INFN-LNF Frascati, Italy) , G. Cappuccio (CNR-ISMN, Italy) , A. Longoni (Politecnico di Milano, Italy) , T. Frizzi (Politecnico di Milano, italy) , G. Cibin (Diamond Light Source) , V. Guglielmotti (Univ Roma Tor Vergata, Italy) , M. Sala (Univ Milan, Dipartimento Sci Terra A Desio, Italy)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Optics Letters , VOL 33 (23) , PAGES 2743-2745

State: Published (Approved)
Published: December 2008

Abstract: Recently, many experiments have highlighted the advantage of using polycapillary optics for x-ray fluorescence studies. We have developed a special confocal scheme for micro x-ray fluorescence measurements that enables us to obtain not only elemental mapping of the sample but also simultaneously its own x-ray imaging. We have designed the prototype of a compact x-ray spectrometer characterized by a spatial resolution of less than 100??m for fluorescence and less than 10??m for imaging. A couple of polycapillary lenses in a confocal configuration together with a silicon drift detector allow elemental studies of extended samples (?3?mm) to be performed, while a CCD camera makes it possible to record an image of the same samples with 6??m spatial resolution, which is limited only by the pixel size of the camera. By inserting a compound refractive lens between the sample and the CCD camera, we hope to develop an x-ray microscope for more enlarged images of the samples under test.

Journal Keywords: XRF; X-Ray Optics; Polycapillaries

Subject Areas: Technique Development, Materials

Technical Areas: Optics

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