Decomposition of wavelength dispersive x-ray spectra

Decomposition of Wavelength Dispersive X-Ray Spectra

Line shapes of atomic lines and soft x-ray emission bands measured with a wavelength dispersive spectrometer (WDS) with the Electron Probe Micro Analyzer (EPMA) are reviewed. Least square fitting to pseudo-Voigt profiles of the digitally measured spectra are used to account for the presence of non-diagram features (high and low energy satellites) and instrumental induced distortions. The effect...

Optimization of Wavelength Dispersive X-Ray Spectrometry Analysis Conditions

In setting up the conditions for quantitative wavelength-dispersive electron microprobe analysis a number of parameters have to be defined for each element, namely accelerating voltage, beam current, and (for each element) x-ray line, spectrometer crystal, pulse-height analyser settings, background offsets, and counting times for peak and background. The choices made affect both the reliability...

Wavelength Dispersive Optics for Ultrafast X-ray Spectroscopy at LCLS

Ultrafast X-ray absorption spectroscopy (XAS) performed at an x-ray free electron laser (XFEL) is a potentially very powerful tool to study numerous phenomena including dissociation in the gas phase , phase transitions in material science 2 and metal ligand charge transfer reactions 3 in coordination chemistry (for a recent review see ). At energies of 5-8 keV the LCLS is expected to provide pu...

Application of Wavelength Dispersive X-Ray Spectroscopy in X-Ray Trace Element Analytical Techniques

Wavelength-dispersive spectrometer for X-ray microfluorescence analysis at the X-ray microscopy beamline ID21 (ESRF)

The development of a wavelength-dispersive spectrometer for microfluorescence analysis at the X-ray Microscopy ID21 beamline of the European Synchrotron Radiation Facility (ESRF) is reported. The spectrometer is based on a polycapillary optic for X-ray fluorescence collection and is operated in a flat-crystal geometry. The design considerations as well as operation characteristics of the spectr...