실험실용 X-ray 흡수분광 및 X-ray 방출분광법 소개 = Laboratory-based X-ray Absorption Spectroscopy and X-ray Emission Spectroscopy

다국어 초록 (Multilingual Abstract)

In this study, we introduce the analytical principles and system configuration of recently commercialized laboratory-based X-ray Absorption Spectroscopy (XAS) and X-ray Emission Spectroscopy (XES) instruments, and evaluate their analytical reliability and applicability through a direct comparison with synchrotron-based data using iron (Fe) reference samples. Laboratory XAS measurements were performed using a scanning-type easyXAFS300+ system, and the obtained Fe K-edge XANES and EXAFS spectra were quantitatively compared with those measured at a synchrotron radiation facility. As a result, it was confirmed that XANES and EXAFS spectral features comparable to synchrotron-quality data could be achieved through approximately 4 h of cumulative acquisition time. Furthermore, the Fe XES spectra of Fe foil and magnetite were successfully measured using the XES mode implemented in the same instrument, and the electronic structure and spin state of iron were effectively analyzed based on the Kβ₁,₃ mainline and the Kβ′ satellite features. This study experimentally demonstrates that laboratory-based XAS/XES systems can provide sufficient analytical reliability as a practical alternative to synchrotron-based techniques. Moreover, these results highlight the broad potential of laboratory XAS/XES for local structural and electronic structure analyses of transition-metal catalysts, clay minerals, and environmental and energy-related materials.