Abstract
Scanning XRF is a powerful elemental imaging technique introduced at the synchrotron that has recently been transposed to laboratory. The growing interest in this technique stems from its ability to collect images reflecting pigment distribution within large areas on artworks by means of their elemental signature. In that sense, scanning XRF appears highly complementary to standard imaging techniques (Visible, UV, IR photography and X-ray radiography). The versatile XRF scanner presented here has been designed and built at the C2RMF in response to specific constraints: transportability, cost-effectiveness and ability to scan large areas within a single working day. The instrument is based on a standard X-ray generator with sub-millimetre collimated beam and a SDD-based spectrometer to collected X-ray spectra. The instrument head is scanned in front of the painting by means of motorised movements to cover an area up to 300 × 300 mm2 with a resolution of 0.5 mm (600 × 600 pixels). The 15-kg head is mounted on a stable photo stand for rapid positioning on paintworks and maintains a free side-access for safety; it can also be attached to a lighter tripod for field measurements. Alignment is achieved with a laser pointer and a micro-camera. With a scanning speed of 5 mm/s and 0.1 s/point, elemental maps are collected in 10 h, i.e. a working day. The X-ray spectra of all pixels are rapidly processed using an open source program to derive elemental maps. To illustrate the capabilities of this instrument, this contribution presents the results obtained on the Belle Ferronnière painted by Leonardo da Vinci (1452–1519) and conserved in the Musée du Louvre, prior to its restoration at the C2RMF.
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References
R.E. Van Grieken, A.A. Markowicz, Handbook of X-Ray Spectrometry; Methods and Techniques, 2nd edn. (Marcel Dekker Inc, New York, 2002)
B. Beckhoff, B. Kanngießer, N. Langhoff, R. Wedell, H. Wolff, Handbook of Practical X-Ray Fluorescence Analysis (Springer, Berlin, 2006)
K. Janssens, F. Adams, Application in art and archaeology, in Microscopic X-Ray Fluorescence Analysis, ed. by K.H.A. Janssens, F.C.V. Adams, A. Rindby (Wiley, Chichester, 2000), pp. 291–314
M. Mantler, M. Schreiner, F. Weber, R. Ebner, F. Mairinger, An X-ray spectrometer for pixel analysis of art objects. Adv. X-Ray Anal. 35, 987 (1992)
L. de Viguerie, V.A. Sole, Ph Walter, Multilayers quantitative X-ray fluorescence analysis applied to easel paintings. Anal. Bioanal. Chem. 395, 2015 (2009)
J. Dik, K. Janssens, G. Van der Snickt, L. Van der Loeff, K. Rickers, M. Cotte, Visualization of a lost painting by Vincent van Gogh using synchrotron radiation based X-ray fluorescence elemental mapping. Anal. Chem. 80, 6436 (2008)
M. Alfeld, K. Janssens, J. Dik, W. De Nolf, G. Van der Snickt, Optimization of mobile scanning macro-XRF systems for the in situ investigation of historical paintings. J. Anal. At. Spectrom. 26, 899–909 (2011)
F. Mairinger, UV-, IR- and X-ray imaging, in Non-destructive Microanalysis of Cultural Heritage Materials, ed. by K. Janssens, R. Van Grieken (Elsevier, Amsterdam, 2004), pp. 15–72
M. Alfeld, J.A.C. Broekaert, Mobile depth profiling and sub-surface imaging techniques for historical paintings: a review. Spectrochim. Acta Part B 88, 211 (2013)
C.F. Bridgman, The amazing patent on the radiography of paintings. Stud. Conserv. 9, 135 (1964)
P. Reischig, L. Helfen, A. Wallert, T. Baumbach, J. Dik, High-resolution non-invasive 3D imaging of paint microstructure by synchrotron-based X-ray laminography. Appl. Phys. A: Mater. Sci. Process. 111, 983 (2013)
C.F. Bridgman, S. Keck, H.F. Sherwood, The radiography of panel paintings by electron emission. Stud. Conserv. 3, 175–182 (1958)
E.V. Sayre, H.N. Lechtman, Neutron activation autoradiography of oil paintings. Stud. Conserv. 13, 161 (1968)
Scientific Examination for the Investigation of Paintings. A Handbook for Conservators-Restorers, Ed. by D. Pinna, M. Galeotti, R. Mazzeo (Centro Di publisher, Firenze, 2009)
M. Alfeld, J. Vaz Pedroso, M. van Eikema Hommes, G. Van der Snickt, G. Tauber, J. Blaas, M. Haschke, K. Erler, J. Dik, K. Janssens, A mobile instrument for in situ scanning macro-XRF investigation of historical paintings. J. Anal. At. Spectrom. 28, 760 (2013)
M. Eveno, E. Ravaud, T. Calligaro, L. Pichon, E. Laval, The Louvre Crucifix by Giotto. Unveiling the original decoration by 2D-XRF, X-ray radiography, emissiography and SEM-EDX analysis. Herit. Sci. 2, 17 (2014)
H. Bronk, S. Röhrs, A. Bjeoumikhov, N. Langhoff, J. Schmalz, R. Wedell, H.-E. Gorny, A. Herold, U. Waldschläger, ArtTAX - a new mobile spectrometer for energy dispersive micro X-ray fluorescence spectrometry on art and archaeological objects. Fresenius J. Anal. Chem. 371, 307 (2001)
V.A. Solé, E. Papillon, M. Cotte, P. Walter, J. Susini, A multiplatform code for the analysis of energy-dispersive X-ray fluorescence spectra. Spectrochim. Acta Part B 62, 63 (2007)
L. Pichon, L. Beck, Ph Walter, B. Moignard, T. Guillou, A new mapping acquisition and processing system for simultaneous PIXE-RBS analysis with external beam. Nucl. Instr. Methods B268, 2028 (2010)
E. Ravaud, M. Eveno, La Belle Ferronnière: a non invasive technical examination, in Leonardo da Vinci’s Technical Practice-Paintings, Drawings and Influence, ed. by M. Menu (Hermann, Paris, 2014), pp. 126–138
Acknowledgments
We are very grateful to Vincent Delieuvin, curator of the painting department of the Musée du Louvre in charge of the Italian paintings from the sixteenth century, for his constant and enthusiastic support of the application of the MA-XRF technique to the investigation of the Belle Ferronnière.
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Ravaud, E., Pichon, L., Laval, E. et al. Development of a versatile XRF scanner for the elemental imaging of paintworks. Appl. Phys. A 122, 17 (2016). https://doi.org/10.1007/s00339-015-9522-4
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DOI: https://doi.org/10.1007/s00339-015-9522-4