• Applying the high-energy resolution fluorescence-detection mode of X-ray absorption spectroscopy, we were able to probe, for the first time to our knowledge, the crystalline electric field splittings of the 5f shell directly in the HERFD-XAS spectra of actinides. Using ThO2 as an example, data measured at the Th 3d edge were interpreted within the framework of the Anderson impurity model. Because the charge-transfer satellites were also resolved in the HERFD-XAS spectra, the analysis of these sa…Read more