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We report the interpretation of all spectral features of Ce L 3 XANES over the 40 eV range. The wave function of the excited electron in the final states of the Ce L 3 edge XANES spectrum is found to be determined by the multiple-scattering processes in a large size cluster formed by at least 45 atoms. The many-body final states for the 2p → 5, d transition, arising from the configuration...