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René Bès

My research field consists in the characterization of current and advanced nuclear fuels to enhance the safety and efficiency of the nuclear energy resource. One important information I am interested in is the local structure behavior (lattice and defects) as a function of temperature and irradiation on virgin fuels including or not dopant and/or fission product. To this aim, I am using Positron Annihilation Spectroscopy (PAS) and synchrotron radiation related technique such as X-ray Absorption Spectroscopy (XAS) and the cutting-edge High Energy Resolution Fluorescence Detected X-ray Absorption Spectroscopy (HERFD-XAS) which combines X-ray absorption and emission. In addition to the experimental work, spectroscopy related calculations are also performed.

Table-Top Alternative To Synchrotrons: New Instrumentation To Study Radioactive Materials With Great Precision

The study of materials used in nuclear power plants is rendered difficult due to the high radioactivity of even a few gram samples. Whereas it would require lots of systematic experiments in large facilities like synchrotrons in order to understand […]