Raising of Discrete Levels into the Far Continuum

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21 June 1971

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 26 (25) , 1521-1525
https://doi.org/10.1103/physrevlett.26.1521

Abstract

Broad peaks observed in the photoabsorption spectra of rare earths ∼10-20 eV above the

4 d

edge are attributed to transitions

4 d^{10} 4 f^{N} \to 4 d^{9} 4 f^{N + 1}

. Exchange interaction splits the

4 d^{9} 4 f^{N + 1}

configuration and raises some multiplets by ∼20 eV. Autoionization to

4 d^{9} - 4 f^{N} ε f

broadens the high levels. The interpretation extends to

p \to d

processes observed in the absorption of synchrotron light by transition elements.

Keywords

EXCHANGE INTERACTION

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