A remote controlled XRF system for field analysis of cultural heritage objects

X-ray fluorescence (XRF) is a nondestructive, multielemental, fast and cost-effective analysis technique. It can be applied in a nonvacuum environment directly on the samples without any preparation. As archaeological and historical objects are often unique and may not be easily movable, a mobile XRF detector system allowing in situ analysis is ideally suited for archaeometric applications. A mobile system was designed and built at the IPNAS laboratory to provide such analyses. The system includes an industrial grade x-ray generator which supplies the primary x-ray beam, an air-cooled silicon rift Detector detector (SDD) with a 5-mm2 active area. The data acquisition system measures the energy and the intensity of the secondary fluorescence x-rays. The detector signal is amplified and analyzed by a multichannel recorder coupled to a microcomputer running JavaSpectre which visualizes and analyzes spectra obtained from the detector. The detection head, containing the detector, the x-ray tube and its power supply, are fixed on a movable platform allowing independent vertical and horizontal movement. All displacements are controlled by a hand-held personal digital assistant (PDA) (Palm) which exchanges data with microcontrollers embedded in the system providing a very precise positioning of the detector over a surface of many square meters. This system control, as well as a typical application of this XRF spectrometer for analyzing pigment composition of a wall painting, will be described. Copyright © 2008 John Wiley & Sons, Ltd.

[1]  P. Moioli,et al.  Analysis of art objects using a portable X-ray fluorescence spectrometer , 2000 .

[2]  Carlo Fiorini,et al.  Works of art investigation with silicon drift detectors , 2000 .

[3]  Heike Soltau,et al.  Silicon drift detectors for high count rate X-ray spectroscopy at room temperature , 2001 .

[4]  J. Schmalz,et al.  ArtTAX – a new mobile spectrometer for energy-dispersive micro X-ray fluorescence spectrometry on art and archaeological objects , 2001, Fresenius' journal of analytical chemistry.

[5]  Richard M. Rousseau,et al.  Corrections for matrix effects in X-ray fluorescence analysis—A tutorial , 2006 .

[6]  Guy Demortier,et al.  Paintings— a challenge for XRF and PIXE analysis , 2000 .

[7]  Koen Janssens,et al.  Use of microscopic XRF for non‐destructive analysis in art and archaeometry , 2000 .

[8]  Roberto Cesareo,et al.  Applications of non-cryogenic portable EDXRF systems in archaeometry , 1996 .

[9]  L. Vincze,et al.  A compact μ-XRF spectrometer for (in situ) analyses of cultural heritage and forensic materials , 2004 .

[10]  Christina Streli,et al.  A portable micro-X-ray fluorescence spectrometer with polycapillary optics and vacuum chamber for archaeometric and other applications ☆ , 2007 .

[11]  Carlo Fiorini,et al.  A PORTABLE XRF SPECTROMETER FOR NON-DESTRUCTIVE ANALYSES IN ARCHAEOMETRY , 1998 .

[12]  Manfred Schreiner,et al.  X‐ray fluorescence spectrometry in art and archaeology , 2000 .

[13]  P.-H. Lefebvre,et al.  DESIGN OF A NETWORKED MULTICHANNEL ANALYZER (nMCA) , 1999 .