High-resolution spectroscopy on an X-ray absorption beamline

Abstract

A bent-crystal spectrometer based on the Rowland circle geometry has been installed and tested on the BM30b/FAME beamline at the European Synchrotron Radiation Facility to improve its performances. The energy resolution of the spectrometer allows different kinds of measurements to be performed, including X-ray absorption spectroscopy, resonant inelastic X-ray scattering and X-ray Raman scattering experiments. The simplicity of the experimental device makes it easily implemented on a classical X-ray absorption beamline. This improvement in the fluorescence detection is of particular importance when the probed element is embedded in a complex and/or heavy matrix, for example in environmental sciences.

Characterization of Germanium Speciation in Sphalerite (ZnS) from Central and Eastern Tennessee, USA, by X-ray Absorption Spectroscopy

“…Finally, a feedback system was used to maximize the output of the two-crystal X-ray monochromator. Fluorescence detection was achieved using two spherically bent crystal analysers (Si660, 1 m bending radius) in Johann-type geometry [31,32]. A silicon drift detector (Vortex) was used for the detection of the signal reflected by the two analysers.…”

Enhanced metal adsorption on solid suspensions by organic molecules

“…An oversimplification consistent with this one is to attribute to each layer the dielectric constant of its major component in the pure state. Similar approximations lead to formula (2). The values reported in Ref.…”

“…For instance, Ref. [1] provides a good review of EXAFS uses; it can be fruitfully supplemented by a more recent paper [2]. Refs.…”

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

“…Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/1/15 1:15 PM The spectrometer is a 4-crystal spectrometer adapted from the 5-crystal one installed on BM30B/CRG-FAME beamline at the ESRF [19,20]. The lower number of crystals was required because of the limited place around (KB system and in some case shielding around the sample) ( Figure 6).…”