LumStimAge project : TL/OSL imaging for heritage materials.

Overview & Synopsis

The LumStimAge project funding by the Île-de-France heritage and ancient materials research network (DIM-MAP) proposes the acquisition of a thermally stimulated (TL) and optically (OSL) luminescence imaging system focused on heritage. It will complete the new TL / OSL reader acquired a year ago by the Research and Restoration Center of the French Museums (C2RMF). The main objective of this device is to study the phenomena of stimulated luminescence within materials of heritage interest, for the purpose of dating, characterization, and study provenance of the materials. The use of TL / OSL imaging is still limited because of the low light intensity and the rapid kinetics of the phenomena observed, but also because of phenomena of optical aberration due to the proximity between luminescent grains. In-depth research into image processing and development of algorithms is therefore necessary. A first application will focus on the study of unfired material and in particular on mortars. Imaging should identify the grains that have undergone the most efficient resetting during mortar manufacturing while taking into account the effects produced at local scale by microdosimetry.