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The video of Sam Webb’s inaugural lecture at the LCP now online

Jean d’Alembert Fellowship

by Fanny Dubray - published on , updated on

The video of Sam Webb’s inaugural lecture is now available online. The Head of Imaging at the Stanford Synchrotron has just completed his stay at IPANEMA as a Jean d’Alembert Visiting Professor.

This inaugural lecture on "Understanding the Physics of Radiation Damage Formation Mechanisms in Complex Heritage Samples" was given on September 23 at Orsay LCP (Laboratoire de Chimie Physique). The event, which gathered 20 participant has been filmed, and the video is now online.

The increasingly high brilliance of new x-ray sources has helped to drive the accessibility of experiments to more difficult materials, it also has a stronger potential to no longer be a non-altering technique due to the high level of radiation exposure. The research developed during the invited professorship aims to gain a better understanding of the physico-chemistry of potential x-ray radiation-induced damage formation mechanisms in complex cultural heritage samples, in particular ultramarine blue pigment. Further work in developing safe methods for data collection, multi-modal methods for in-situ monitoring, assessing dose-damage relationships in a variety of different materials of increasing complexity, as well as training activities, are planned for continuing collaboration with IPANEMA and the Université Paris-Saclay.

The collaboration between the Stanford Synchrotron and IPANEMA have produced many important discoveries, from the determination of trace elements and colored pigments in dinosaur fossils, deciphering of missing text in manuscripts and palimpsests, to the chemical changes that occur in paint pigments as ageing takes place.

View online : Conférence inaugurale de Sam Webb - 23 septembre