35 research outputs found
DĂ©veloppement dâun appareil portable de diffraction et fluorescence des rayons X pour lâanalyse non-destructive des Ćuvres dâart
Au dĂ©but des annĂ©es 2000, lâimpulsion de contrats europĂ©ens a entraĂźnĂ© le C2RMF dans la conception et la construction dâun appareil portable de fluorescence et diffraction des rayons X (FRX-DRX). Les choix techniques concernant la source et les dĂ©tecteurs ont conduit Ă un appareil robuste, qui a Ă©tĂ© utilisĂ© dans de nombreux pays dâEurope, Ă la source dâune trentaine de publications dans des revues scientifiques.In the early 2000s, the stimulus of European contracts led the C2RMF teams to design and build a portable X-ray diffraction/X-ray fluorescence (XRD/XRF) device. The technical choices made concerning the source and detectors resulted in a robust device, which has been used in several European countries and produced about thirty or so articles published in scientific journals
DâAGLAE Ă New AGLAE
Le dĂ©veloppement de lâinstrument et des mĂ©thodes dâanalyse par faisceau dâions appliquĂ©es aux problĂ©matiques patrimoniales est au cĆur de lâactivitĂ© de lâĂ©quipe AGLAE. Le projet New AGLAE a pour objectif de mettre Ă disposition des chercheurs une ligne de faisceau automatisĂ©e et en fonctionnement jour et nuit, ainsi quâun nouveau systĂšme de dĂ©tection PIXE, PIGE, RBS et IBIL capable dâeffectuer de lâimagerie chimique systĂ©matique sur plusieurs centimĂštres carrĂ©s.The development of the instrument and the methodologies of ion beam analysis applied to Cultural Heritage issues is a major interest of the AGLAE team. The New AGLAE project aims at providing an automated beamline available night and day as well as a new PIXE, PIGE, RBS and IBIL detection system enabling systematic chemical imaging on several cmÂČ
A new 3D positioner for the analytical mapping of non-flat objects under accelerator beams
We report the development of a 3D positioner for the elemental mapping of non-flat surfaces of heritage targets and its implementation in the external beam of the AGLAE accelerator, a joint research activity of the IPERION-CH European program.The positioner operates in two steps: 1) object surface is digitized using a 3D scanner implemented in the beamline. Surface points are interpolated onto a rectangular grid suitable for beam scanning. 2) Object is scanned under the beam using X/Y/Z stages holding a hexapod robot for rotations. During scanning, target surface is positioned with the Z stage and oriented perpendicular to the beam using hexapod rotations. Areas up to 100 à 100 mm 2 with a resolution of 50 ” m and 30° curvature of can be mapped on objects of 200 mm and 5 kg max. System operation was tested by recording PIXE maps on the polychrome decoration of a curved porcelain pot
Fast mapping of gold jewellery from ancient Egypt with PIXE: Searching for hard-solders and PGE inclusions
International audienc
From AGLAE to new AGLAE
The development of the instrument and the methodologies of ion beam analysis applied to Cultural Heritage issues is a major interest of the AGLAE team. The New AGLAE project aims at providing an automated beamline available night and day as well as a new PIXE, PIGE, RBS and IBIL detection system enabling systematic chemical imaging on several cmÂČ.Le dĂ©veloppement de lâinstrument et des mĂ©thodes dâanalyse par faisceau dâions appliquĂ©es aux problĂ©matiques patrimoniales est au coeur de lâactivitĂ© de lâĂ©quipe AGLAE.Le projet New AGLAE a pour objectif de mettre Ă disposition des chercheurs une ligne de faisceau automatisĂ©e et en fonctionnement jour et nuit, ainsi quâun nouveau systĂšme de dĂ©tection PIXE, PIGE, RBS et IBIL capable dâeffectuer de lâimagerie chimique systĂ©matique sur plusieurs centimĂštres carrĂ©s
Les céramiques architecturales à décors de glaçures colorées au sein du monde islamique (fin XIVe-fin XVIIe s.)
International audienceLes dĂ©cors de glaçures colorĂ©es appliquĂ©s aux cĂ©ramiques architecturales sont lâun des rĂ©sultats des nombreuses expĂ©rimentations techniques et esthĂ©tiques qui virent le jour au cours des premiers siĂšcles de la civilisation islamique. Recherche polychromique par excellence, ils vinrent orner les monuments Ă partir de la fin du XIVe siĂšcle et ce jusquâĂ nos jours, de lâAnatolie Ă lâInde, en passant par lâIran et lâAsie Centrale. Cette technique de dĂ©coration reste cependant mĂ©connue et la littĂ©rature demeure confuse Ă son propos. Nous nous proposons donc de caractĂ©riser les recettes de fabrication qui firent la rĂ©putation de quatre de ses grands pĂŽles de production : lâempire timuride de la fin XIVe s au XVe s, lâempire ottoman au dĂ©but du XVe s et au XVIe s et lâempire safavide du XVIIe s. Un corpus dâune cinquantaine de tessons provenant des rĂ©serves du DĂ©partement des Arts de lâIslam du musĂ©e du Louvre et des rĂ©serves du musĂ©e de SĂšvres â CitĂ© de la CĂ©ramique a de ce fait Ă©tĂ© soumis Ă des phases dâobservations macroscopique et microscopique mais Ă©galement de caractĂ©risation physico-chimique (MEB-EDS, PIXE et micro-spectromĂ©trie Raman). Cette communication tentera ainsi de poser des jalons technologiques, dĂ©coratifs, chronologiques et gĂ©ographiques inhĂ©rents aux dĂ©cors de glaçures colorĂ©es en mettant en exergue ses variantes technologiques
Colored Glaze Tiles during the Ottoman Empire (beginning of the 15th to the mid-16th century )
International audienceThe first centuries of Islamic civilization were characterized by major technological developments which resulted from intensive technical experimentation and aesthetic research: one of these is the colored glaze decoration, where a non-vitreous line surrounds different areas of colored glazes serving to keep these glazes separated during the firing. This ornamentation has spread in Central Asia from the end of the 14th century, to the Ottoman Empire during the 15th and the 16th century and finally in Iran and India during the Safavid reign. This kind of decoration is still little known and the literature stays muddled about it. The object of this poster is to characterize the craftsmenâs recipes for making these tiles during two periods of the Ottoman period: the beginning of the 15th century and the first half of the 16th century. The corpus of this study is currently made of tiles coming from the storage of the Islamic Art Department of the Louvre Museum and of the museum of SĂšvres â CitĂ© de la CĂ©ramique. In addition to being observed at the macroscopic and microscopic scale, these shards has been subjected to physicochemical analysis in order to have a better understanding of their operating process (the stratigraphy of the decoration, the nature of the paste, the glazes, the black outlineâŠ) and so of their evolution according to different geographical areas. A part of this sampling was examined at the CRP2A (Centre de Recherche en Physique AppliquĂ©e Ă lâArchĂ©ologie) in Bordeaux with destructive analysis (MEB-EDS), at the C2RMF (Centre de Recherche et de Restauration des MusĂ©es de France) in Paris with non-destructive analysis (PIXE, PIGE) and at the MONARIS (De la molĂ©cule aux nano-objets: rĂ©activitĂ©, interactions et spectroscopies) in Paris for Raman spectrometry