X-Ray Photoemission Spectra of 4d and 3d Electrons in Lanthanum- and Cerium-Halides

抄録

X-ray photoemission spectra have been measured of the 4d and 3d shells of La³⁺ and Ce³⁺ in La- and Ce-halides. The results, particularly in the case of the spectra of the 4d level, show a marked dependence of spectral profile of halogen. The existence of the satellite accompanying the 4d_5⁄2 and 4d_3⁄2 components is shown by an analysis of the spectra obtained by deconvolution of the raw data of La-halides. The halogen dependence of the spectra is ascribed to the simultaneous charge transfer transition from the valence level of ligand to the unoccupied 4f level of the metal ion as being the origin of the satellite.