References of "Strivay, David"
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See detailCharacterization of modern Prussian blue pigments by Mössbauer spectroscopy and synchrotron radiation
Samain, Louise ULg; Silversmit, Geert; Sougrati, Moulay T. et al

Conference (2009, November 27)

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See detailFading of Modern Prussian Blue Pigments : Preliminary Study
Samain, Louise ULg; Sougrati, Moulay T.; Hatert, Frédéric ULg et al

Poster (2009, June)

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See detailMulti-disciplinary investigation of the tomb of Menna (TT69), Theban Necropolis, Egypt
Vandenabeele, Peter; Garcia-Moreno, Renata; Mathis, François ULg et al

in Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy (2009), 73(3), 546-552

The archaeometrical survey of the tomb of Menna (TT69), which took place in November-December 2007, is part of the extended research program that aims to study and preserve this tomb in all its aspects ... [more ▼]

The archaeometrical survey of the tomb of Menna (TT69), which took place in November-December 2007, is part of the extended research program that aims to study and preserve this tomb in all its aspects. Menna was a high official who served as an overseer of Cadastral surveys during the reigns of pharaohs Tuthmosis IV and Amenhotep Ill (ca. 1419-1370 BC). The research team aimed to gather information, in a totally non-destructive way, on the materials used and the painting techniques. The technical examinations included photography with normal and raking light. macrophotography, ultra-violet (UV) fluorescence photography, and microscopy. On selected points X-ray fluorescence (XRF) was combined with diffuse reflectance UV-spectrometry, near infrared (NIR) diffuse reflectance spectroscopy and Raman spectroscopy. The technical aspects as well as problems that are inherently associated with an interdisciplinary survey of this extent, are discussed. The project worked with a large team of people with different backgrounds and sensitive technical equipment. Working conditions were quite hostile, including elevated temperatures and dust hampering the examinations. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

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See detailRapport Annuel 2009: Analyses non destructives d'un livre du 17ème siècle
Fievet, Sarah; Cervera Xicotencatl, Ariadna; Hocquet, François-Philippe ULg et al

Report (2009)

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See detailGlass production in late antiquity
Van Wersch, Line ULg; Mathis, François ULg; Dupuis, Thomas ULg et al

Poster (2009)

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See detailTowards the differentiation of non-treated and treated corundum minerals by ion-beam-induced luminescence and other complementary techniques
Calvo Del Castillo, Helena ULg; Dupuis, Thomas ULg; Mathis, François ULg et al

in Analytical and Bioanalytical Chemistry (2009), 394

Abstract  Differentiation of treated and non-treated gemstones is a chief concern for major jewellery import companies. Low-quality corundum specimens coming from Asia appear to be often treated with heat ... [more ▼]

Abstract  Differentiation of treated and non-treated gemstones is a chief concern for major jewellery import companies. Low-quality corundum specimens coming from Asia appear to be often treated with heat, BeO or flux in order to enhance their properties as precious minerals. A set of corundum samples, rubies and sapphires from different origins, both treated and non-treated has been analysed at the Centre Européen d’Archéométrie, with ion-beam-induced luminescence (IBIL) and other complementary techniques such as Raman, proton-induced X-ray emission (PIXE), and proton-induced gamma-ray emission (PIGE). IBIL, also known as ionoluminescence, has been used before to detect impurities or defects inside synthetic materials and natural minerals; its use for the discrimination of gemstone simulants or synthetic analogues has been elsewhere discussed (Cavenago-Bignami Moneta, Gemología, Tomo I Piedras preciosas, perlas, corales, marfil. Ediciones Omega, Barcelona, 1991). PIXE has been frequently applied in the archaeometric field for material characterisation and provenance studies of minerals (Hughes, Ruby & sapphire. RWH Publishing, Fallbrook, 1997; Calvo del Castillo et al., Anal Bioanal Chem 387:869–878, 2007; Calligaro et al., NIM-B 189:320–327, 2002) and PIGE complements the elemental analysis by detecting light elements in these materials such as—and lighter than—sodium that cannot be identified with the PIXE technique (Sanchez et al., NIM-B 130:682–686, 1997; Emmett et al., Gems Gemology 39:84–135, 2003). The micro-Raman technique has also been used complementarily to ion beam analysis techniques for mineral characterisation (Novak et al., Appl Surf Sci 231–232:917–920, 2004). The aim of this study is to provide new means for systematic analysis of corundum gemstone-quality mineral, alternative to the traditional gemmologic methods; for this purpose, a Spanish jewellery import company supplied us with a number of natural corundum samples coming from different places (part of them treated as explained above). The PIXE elemental concentrations of the samples showed large quantities of calcium and lead in some cases that can be linked to treatment with fluxes or lead oxide. The plot of the chromium and iron concentration grouped the samples in various aggregates that corresponded to the different types of corundum analysed. Micro-Raman complemented the PIXE analysis corroborating the presence of lead oxides but the use of the PIGE technique was not successful for the detection of beryllium due to the low cross section of the nuclear reaction chosen for its identification. IBIL was capable of distinguishing between treated and non-treated samples of the same type based on the luminescent features of the materials. [less ▲]

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See detailDifferentiation of polymorphs by Ionoluminescence
Calvo Del Castillo, Helena ULg; Chene, Grégoire ULg; Dupuis, Thomas ULg et al

in Physics Procedia (2009), 2

Polymorph minerals are natural materials that share the same composition but have a different structure. Traditionally, the characterization of polymorphs has been done using different techniques of ... [more ▼]

Polymorph minerals are natural materials that share the same composition but have a different structure. Traditionally, the characterization of polymorphs has been done using different techniques of microscopy, X-ray diffraction Raman or IR Spectroscopy for instance. In this work we propose the use of a new technique as an alternative to characterise polymorphs: Ion Beam Induced Luminescence (IBIL). As an advantage to the other techniques, IBIL can be carried out simultaneously with the PIXE technique or other Ion Beam Analysis techniques and the combination will yield results on elemental composition and luminescence properties at the same time. Different minerals have been analysed with IBIL as an example of application to the characterization of polymorphs and its correspondent spectra are explained in this paper. [less ▲]

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See detailImproved energy resolution of a cyclotron beam for RBS measurements
Chene, Grégoire ULg; Garnir, Henri-Pierre ULg; Marchal, André ULg et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2008), 266(10), 2110-2112

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See detailLa peinture murale à Liège au XVIe siècle : analyse technologique d'une peinture de la cathédrale Saint-Paul de Liège
Oger, Cécile ULg; Denoël, Sophie; Strivay, David ULg et al

in Denoël, Sophie (Ed.) Les peintures murales. Les techniques (2008)

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See detailLa peinture murale à Liège au XVIe siècle : analyse technologique d'une peinture de la cathédrale Saint-Paul de LIège
Oger, Cécile ULg; Denoël, Sophie; Strivay, David ULg et al

in Denoël, Sophie (Ed.) Les peintures murales. Les techniques (2008)

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