3D Micro-PIXE at atmospheric pressure: A new tool for the investigation of art and archaeological objects |
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Authors: | Birgit Kanngieß er,Andreas-Germanos Karydas,Dimosthenis Sokaras,Stefan Rö hrs,Joseph Salomon |
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Affiliation: | a Institute for Optic and Atomic Physics, Technical University of Berlin, Hardenbergstr. 36, 10623 Berlin, Germany b Institute of Nuclear Physics, NCSR Demokritos, Athens, Greece c Centre de Recherche et de Restauration des Musée de France (C2RMF), CNRS UMR 171 and GDR ChimArt 2114 CNRS/French Ministry of Culture, Paris, France |
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Abstract: | The paper describes a novel experiment characterized by the development of a confocal geometry in an external Micro-PIXE set-up. The position of X-ray optics in front of the X-ray detector and its proper alignment with respect to the proton micro-beam focus provided the possibility of carrying out 3D Micro-PIXE analysis. As a first application, depth intensity profiles of the major elements that compose the patina layer of a quaternary bronze alloy were measured. A simulation approach of the 3D Micro-PIXE data deduced elemental concentration profiles in rather good agreement with corresponding results obtained by electron probe micro-analysis from a cross-sectioned patina sample. With its non-destructive and depth-resolving properties, as well as its feasibility in atmospheric pressure, 3D Micro-PIXE seems especially suited for investigations in the field of cultural heritage. |
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Keywords: | 07.85.Qe 82.80.Ej |
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