References of "Strivay, David"
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See detailDiscovery and characterization of an unknown blue-green Maya pigment: Veszelyite
Moreno, R Garcia; Mathis, François ULg; Mazel, V. et al

in Archaeometry (2008), 50(4), 658-667

Blue-green mosaic and polychrome masks and funerary offerings from the royal tombs of Calakmul, Mexico, were analysed by scanning electron microscope equipped with energy dispersive X-ray spectroscopy ... [more ▼]

Blue-green mosaic and polychrome masks and funerary offerings from the royal tombs of Calakmul, Mexico, were analysed by scanning electron microscope equipped with energy dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD), and particle induced X-ray emission (PIXE). This led to the first identification of the use of veszelyite, a rare hydrated copper-zinc phosphate, as green pigment. Analyses of a geological sample of this mineral have been done to confirm the characterization of this Mayan pigment, which might help determine pre-Columbian trade routes of precious and luxury objects in the ancient Maya Classic period (ad 250-800). [less ▲]

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See detailMiddle energy PIXE preliminary experiments
Dupuis, Thomas ULg; Mathis, François ULg; Marchal, André ULg et al

Conference (2008)

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See detailArchaeometry At The Tomb Of Menna, Theban Necropolis, Egypt: A Multi-Method Analytical Approach
Garcia Moreno, Renata; Mathis, François ULg; Van Elslande, Elsa et al

Conference (2008)

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See detailArchaeometry at the Centre Européen d’Archéométrie-Université de Liège
Calvo Del Castillo, Helena ULg; Mathis, François ULg; Garcia Moreno, Renata et al

Conference (2008)

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See detailStudy of the provenance of Belgian Merovingian garnets by PIXE at IPNAS cyclotron
Mathis, François ULg; Vrielynck, Olivier; Laclavetine, Kilian et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2008), 266(10), 2348-2352

Recent archaeological excavation in Belgium reveals one of the biggest Merovingian necropolis ever found in this country. This necropolis contains 436 tombs with a period of occupation of almost two ... [more ▼]

Recent archaeological excavation in Belgium reveals one of the biggest Merovingian necropolis ever found in this country. This necropolis contains 436 tombs with a period of occupation of almost two centuries. Some of these tombs were very rich, especially two of them, and delivered an important funerary furniture. About 60 jewels inlaid with red garnets have been found, most of them of "cloisonne" style (namely about 450 garnets). The new extracted beam set-up of the IPNAS cyclotron (University of Liege, Belgium) has been improved in order to analyse by PIXE these garnets and try to determine their provenance. These analyses reveal that the garnets found in the necropolis of Grez-Doiceau are very homogeneous in composition (almandine garnets) and are coming almost from a unique source. These results have been compared to previous studies led in France during these past five years. This permits to identify the source of almandine garnet situated in India and to highlight differences in garnet supply between France and Belgium in Merovingian times. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

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See detailMicro-crystalline inclusions analysis by PIXE and RBS
Strivay, David ULg; Ramboz, Clairette; Gallien, Jean-Paul et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2008), 266(10), 2375-2378

A characteristic feature of the nuclear microprobe using a 3 MeV proton beam is the long range of particles (around 70 mu m in light matrices). The PIXE method, with EDS analysis and using the multilayer ... [more ▼]

A characteristic feature of the nuclear microprobe using a 3 MeV proton beam is the long range of particles (around 70 mu m in light matrices). The PIXE method, with EDS analysis and using the multilayer approach for treating the X-ray spectrum allows the chemistry of an intra-crystalline inclusion to be measured, provided the inclusion roof and thickness at the impact point of the beam (Z and e, respectively) are known (the depth of the inclusion floor is Z + e). The parameter Z of an inclusion in a mineral can be measured with a precision of around 1 mu m using a motorized microscope. However, this value may significantly depart from Z if the analyzed inclusion has a complex shape. The parameter e can hardly be measured optically. By using combined RBS and PIXE measurements, it is possible to obtain the geometrical information needed for quantitative elemental analysis. This paper will present measurements on synthetic samples to investigate the advantages of the technique, and also on natural solid and fluid inclusions in quartz. The influence of the geometrical parameters will be discussed with regard to the concentration determination by PIXE. In particular, accuracy of monazite micro-inclusion dating by coupled PIXE-RBS will be presented. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

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