3D Micro-PIXE at atmospheric pressure: A new tool for the investigation of art and archaeological objects

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• 作者：Birgit Kanngieß ; er ; Andreas-Germanos Karydas ; Roman Schü ; tz ; Dimosthenis Sokaras ; Ina Reiche ; Stefan Rö ; hrs ; Laurent Pichon ; Joseph Salomon
• 关键词：3D Micro-PIXE ; Confocal set-up ; Depth profiling of elemental composition ; Bronze ; Patina ; Archaeometry
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2007
• 出版时间：November 2007
• 年：2007
• 卷：264
• 期：2
• 页码：383-388
• 全文大小：876 K

文摘

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.