The 2p(6) --> 2p(5)(4f5d)(+1) --> 2p(6)3d(9)(4f5d)(+1) resonant inelastic X
-ray scattering (RIXS) process is studied in [(5 Angstrom) La/ (10 Angstrom
) Ce/(5 Angstrom) La/(30 A) Fe] x n multilayers. RIXS is a bulk sensitive p
robe which, as shown here, provides information on the correlation energies
in mixed-valent cerium systems. (C) 1999 Elsevier Science B.V. All rights
reserved.