Numéro
J. Phys. Colloques
Volume 48, Numéro C9, Décembre 1987
X-Ray and Inner-Shell Processes
Vol. 1
Page(s) C9-997 - C9-1000
DOI https://doi.org/10.1051/jphyscol:19879177
X-Ray and Inner-Shell Processes
Vol. 1

J. Phys. Colloques 48 (1987) C9-997-C9-1000

DOI: 10.1051/jphyscol:19879177

BREMSSTRAHLUNG ISOCHROMAT SPECTROSCOPY OF LIGHT RARE EARTH COMPOUNDS

R. STILLER1, H. MERZ1, W. DREWES2 and H.-G PURWINS2

1  Physikalisches Institut der Universität Münster, Wilhelm-Klemm-Strasse 10, D-4400 Münster, F.R.G.
2  Institut für Angewandte Physik der Universität Münster, Corrensstrasse 2-4, D-4400 Münster, F.R.G.


Abstract
Bremsstrahlung isochromat spectra (BIS) of REAl2 intermetallics (RE = La, Ce, Nd, Sm) recorded at [MATH]ω0 = 1008 eV will be presented. Additional electron energy loss spectra (EELS) measured under indentical target conditions at Ep = [MATH]ω0 identify secondary structures in the BIS spectra as replicas of the 4f-final state intensity. For LaAl2 and CeAl2 a comparison of the deconvoluted BIS spectra with DOS calculations of the extended states will be given. For the γ-Cerium like compound CeAl2 a small f0 - contribution c(f0) ≈ 0.05 to the ground state follows from a new evaluation procedure.