A large-solid-angle X-ray Raman scattering spectrometer at ID20 of the European Synchrotron Radiation Facility

Abstract

An end-station for X-ray Raman scattering spectroscopy at beamline ID20 of the European Synchrotron Radiation Facility is described. This end-station is dedicated to the study of shallow core electronic excitations using non-resonant inelastic X-ray scattering. The spectrometer has 72 spherically bent analyzer crystals arranged in six modular groups of 12 analyzer crystals each for a combined maximum flexibility and large solid angle of detection. Each of the six analyzer modules houses one pixelated area detector allowing for X-ray Raman scattering based imaging and efficient separation of the desired signal from the sample and spurious scattering from the often used complicated sample environments. This new end-station provides an unprecedented instrument for X-ray Raman scattering, which is a spectroscopic tool of great interest for the study of low-energy X-ray absorption spectra in materials under in situ conditions, such as in operando batteries and fuel cells, in situ catalytic reactions, and extreme pressure and temperature conditions.

Polymerized 4-Fold Coordinated Carbonate Melts in the Deep Mantle

“…FIGURE 4 | Structure factor, S(q), for low P reacted FeCO 3 +SiO 2 glass (black), compared to SiO 2 glass at 20 GPa (Sato and Funamori, 2008) 15 µm 2 . The large-solid-angle x-ray scattering spectrometer (Huotari et al, 2017) was set up with 24 Si(660) analyzer crystals for an average momentum transfer of 7.3 ± 0.2 Å −1 and an overall energy resolution of 0.7 eV. All experimental data were analyzed using the XRStools software package (Sahle et al, 2015).…”

Asic developments for radiation imaging applications: The medipix and timepix family

“…This reduced the readout (or dead) time to less than 300us and therefore provided kHz framerates. The MAXIPIX system has most recently been incorporated in a novel facility at ESRF providing X-ray Raman scattering spectrometry [59].…”

Intercalation stage dependence of core electronic excitations in Li-intercalated graphite from inelastic X-ray scattering

“…Hard X-ray-based inelastic scattering (IXS) spectroscopy yields true bulk information on electronic excitation and structure and is compatible with various sample environments, 21 circumventing the shortcomings of UV/soft X-ray spectroscopies. Recent developments of multi-crystal spectrometers 22 will make it feasible to carry out in situ studies of Li-ion batteries by means of IXS in the near future. Fundamental groundwork for such studies was established from ex situ IXS experiments 8 but limited to stage-I LIG samples.…”