Comparison of Atomic Absorption Spectroscopy and Energy Dispersive X-Ray Fluorescence Spectrometer Methods for Chemical Analysis

X-ray Absorption Spectroscopy Using X–ray Fluorescence Spectrometer

Strong characteristic Kα X-ray lines are accompanied by weak lines due to the radiative Auger effect (RAE) [1, 2]. The characteristic Kα fluorescent X-rays (K-L2,3 lines) are emitted by the 2p→1s electric dipole transition after one of the 1s electron photoionization, Though the probability is less than 0.01, one of the 2p electrons is excited into an unoccupied discrete or continuum level simu...

Atomic-scale Chemical Imaging and Quantification of Metallic Alloy Structures by Energy-Dispersive X-ray Spectroscopy

Determination of atomic-scale crystal structure for nanostructured intermetallic alloys, such as magnetic alloys containing Al, Ni, Co (alnico) and Fe, is crucial for understanding physical properties such as magnetism, but technically challenging due to the small interatomic distances and the similar atomic numbers. By applying energy-dispersive X-ray spectroscopy (EDS) mapping to the study of...

High energy resolution five-crystal spectrometer for high quality fluorescence and absorption measurements on an x-ray absorption spectroscopy beamline.

Fluorescence detection is classically achieved with a solid state detector (SSD) on x-ray absorption spectroscopy (XAS) beamlines. This kind of detection however presents some limitations related to the limited energy resolution and saturation. Crystal analyzer spectrometers (CAS) based on a Johann-type geometry have been developed to overcome these limitations. We have tested and installed suc...

Chemical characterization and X-ray absorption spectroscopy

A rapid progress in the theoretical developments based on modulations of absorption cross section due to single and multiple scattering of an electron emitted from an inner shell by X-rays impinging on the target atom to understand the EXAFS and XANES in recent years and harnessing of the highly powerful synchrotron radiation source for the X-rays have bestowed immense capability on X-ray absor...

Stopped-flow X-ray Absorption Spectroscopy in Dispersive Mode