Initial- and final-state excitations in KL{sub 23}L{sub 23} Auger spectra of Cu and Ni metals, induced near threshold

High-energy resolution KL{sub 23}L{sub 23} Auger spectra of polycrystalline Cu and Ni metals were measured while tuning the energy of the exciting x-rays in the near threshold region up to 50 eV above the K absorption edge. The intensity evolution of the pronounced satellite lines as a function of p...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2006-05, Vol.73 (19)
Main Authors: Koever, L., Berenyi, Z., Cserny, I., Lugosi, L., Graduate School of Materials Science, Nara Institute of Science and Technology, Surface and Materials Science Laboratory, 8916-5, Takayama, Ikoma 630-0192, Drube, W., Medicherla, V. R. R., Mukoyama, T.
Format: Article
Language:English
Subjects:
APPROXIMATIONS
AUGER ELECTRON SPECTROSCOPY
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER
ELECTRON SPECTRA
ENERGY RESOLUTION
EV RANGE
EXCITATION
K ABSORPTION
MOLECULES
NICKEL
PHOTONS
POLYCRYSTALS
X RADIATION
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Summary:High-energy resolution KL{sub 23}L{sub 23} Auger spectra of polycrystalline Cu and Ni metals were measured while tuning the energy of the exciting x-rays in the near threshold region up to 50 eV above the K absorption edge. The intensity evolution of the pronounced satellite lines as a function of photon energy reveals different behavior for particular satellites as a consequence of initial state and final state shake excitations. The satellite intensity development near threshold is compared to predictions of different simple models based on the free atom approximation. The observed energy separations between the satellites and the {sup 1}D{sub 2} main diagram line is in accord with results from a cluster molecular orbital model and confirms the assignment based on the satellite intensity evolution curves concerning the origin of the satellites.
ISSN:1098-0121
1550-235X
DOI:10.1103/PHYSREVB.73.1