X-ray absorption spectroscopy investigations on radioactive matter using MARS beamline at SOLEIL synchrotron

Isabelle Llorens (1) , Pier lorenzo Solari (1) , Bruno Sitaud (1) , René Bes (1, 2) , Sebastiano Cammelli (1) , Hervé Hermange (1) , Guillaume Othmane (3) , Sami Safi (4) , Philippe Moisy (5) , Sandrine Wahu (6) , Carole Bresson (6) , Michel l. Schlegel (6) , Denis Menut (6) , Jean-Luc Bechade (6) , Philippe Martin (6) , Jean-Louis F Hazemann (7) , Olivier Proux (1, 8) , Christophe den Auwer

1 SSOLEIL - Synchrotron SOLEIL
2 CEA Cadarache
3 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
4 IPNO - Institut de Physique Nucléaire d'Orsay
5 LCLT - Laboratoire d'Etudes du Comportement à Long Terme des matériaux de conditionnement
6 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
7 NEEL - MRS - Matériaux, Rayonnements, Structure
8 ICN - Institut de Chimie de Nice

The MARS beamline at the SOLEIL synchrotron is dedicated to the characterization of radioactive material samples. One great advantage of the beamline is the possibility to characterize about 380 radionuclides by different X-ray techniques in the same place. This facility is unique in Europe. A wide energy range from around 3.5 keV to 36 keV K-edges from K to Cs, and L3 edges from Cd to Am and beyond can be used. The MARS beamline is optimized for X-ray absorption spectroscopy techniques (XANES/EXAFS), powder diffraction (XRD) but x-ray fluorescence (XRF) analysis, High Energy Resolution Fluorescence Detected -XAS (HERFD-XAS), X-ray Emission (XES) and μ -XAS/XRD are also possible. A description of the beamline as well as its performances are given in a first part. Then some scientific examples of XAS studies from users are presented which cover a wide variety of topics in radiochemistry and nuclear materials.

Mots clés: Synchrotron; X-rays; XAS; HERFD-XAS; Uranium; Neptunium; Zirconium; Molybdenum; Thorium

Domaines: Physique des accélérateurs [physics.acc-ph]; Physique Nucléaire Expérimentale [nucl-ex]; Physique [physics]

Isabelle Llorens, Pier lorenzo Solari, Bruno Sitaud, René Bes, Sebastiano Cammelli, et al.. X-ray absorption spectroscopy investigations on radioactive matter using MARS beamline at SOLEIL synchrotron. Radiochimica Acta, 2014, 102 (11), pp.957 - 972. ⟨10.1515/ract-2013-2241⟩. ⟨hal-03273199v2⟩