Diffraction Anomalous Fine Structure spectroscopy at the beamline BM2 at the European Synchrotron Radiation Facility

TL;DR

This paper discusses the development and technical achievements of a state-of-the-art DAFS spectroscopy setup at ESRF's BM2 beamline, enabling detailed analysis of electronic and atomic structures through resonant x-ray scattering.

Contribution

It introduces the technical requirements and recent advancements for reliable DAFS data collection at the ESRF BM2 beamline.

Findings

Successful implementation of energy scan diffraction setup

Enhanced data reliability for DAFS experiments

Technical benchmarks achieved at ESRF BM2

Abstract

Diffraction Anomalous Fine Structure (DAFS) spectroscopy uses resonant elastic x-rays scattering as an atomic, shell and site selective probe that gives information on the electronic structure and the local atomic environment as well as on the long range ordered crystallographic structure. A DAFS experiment consists of measuring the Bragg peak intensities as a function of the energy of the incoming x-ray beam. The French CRG (Collaborative Research Group) beamline BM2-D2AM (Diffraction Diffusion Anomale Multi-longueurs d'onde) at the ESRF (European Synchrotron Radiation Facility) has developed a state of the art energy scan diffraction set-up. In this article, we present the requirements for obtaining reliable DAFS data and report recent technical achievements.