A new multichannel collimator optimized for Paris–Edinburgh press geometry and a two-dimensional imaging plate detector have been developed at beamline ID30 at the European Synchrotron Radiation Facility. This system allows in situ collection of high quality x-ray diffraction data of liquids and amorphous materials simultaneously at high pressure and high temperature conditions. Excellent improvements in terms of signal to background ratio have been obtained. In order to illustrate the potential of this new device, preliminary results on liquid tin and lead under high pressure are presented.
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 -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.
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