Thermal Wave Detection Technique for High-Resolution XANES Spectroscopy of Lead and Platinum Metal Foils

X-ray Absorption Near Edge Structure (XANES) spectroscopy is a powerful tool for investigating the electronic and structural properties of materials. Due to the availability of an intense tuneable X-ray source in the form of synchrotron radiation, X-ray spectroscopy has flourished in the past ten years. A large number of detection techniques have been developed to measure the absorption of X-rays by thin films, metal oxide films and surface layers. All the detection techniques measure a signal that is related to the probability of exciting a core electron. In this study, we introduce a novel application of the thermal wave detection method using a pyroelectric detector (LiTaO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>) for acquiring XANES spectra of Lead (Pb) and Platinum (Pt) metal foils. By exposing these metal foils to synchrotron X-ray radiation, the absorbed X-rays generate localized heating, leading to thermal waves. These thermal waves are detected and analyzed using the pyroelectric detector to obtain the XANES spectra.