Combined PIXE/PIGE and IBIL with external beam applied to the analysis of Merovingian glass beads
François Mathis|Guillaume Othmane|Olivier Vrielynck|Helena Calvo Del Castillo|Grégoire Chêne|Thomas Dupuis|David Strivay
New improvements on our archaeometry line at the cyclotron of Institute Nuclear and Atomic Physics Spectrometry University Liège have allowed use PIXE/PIGE IBIL in-air for analysis cultural heritage objects. The extraction is performed through a 100 nm thick Si3N4 window. detection set-up consists now two X-ray one γ-ray detectors, together with fiber optic UV–visible spectrometer. This has already been tested modern corundum [1] adapted to archaeological artefacts. In this work, we used it analyse 216 out 5000 Merovingian glass beads that come from necropolis Bossut-Gottechain (Belgium), most important ever found in Belgium. IBA analyses confirmed typological division different groups chemical composition gives us new insights fabrication techniques matrices colorants.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms