X-ray absorption spectroscopy

X-ray absorption spectroscopy (XAS) is a technique used to study the structure and composition of materials at the atomic level. When a material is exposed to specific X-ray energies, atoms absorb the X-rays at particular energies depending on their type and environment. By measuring how much X-ray is absorbed at different energies, scientists can determine details about an atom’s oxidation state, local surroundings, and how atoms are bonded together. This method helps researchers understand materials better, such as catalysts, biological molecules, or minerals, by providing insight into their atomic-scale structure.