Raising of Discrete Levels into the Far Continuum

Authors

• J.L. Dehmer, University of Chicago, Chicago, Illinois
• Anthony F. Starace, University of Nebraska-LincolnFollow
• U. Fano, University of Chicago, Chicago, Illinois
• J. Sugar, National Bureau of Standards, Washington, D. C.
• J.W. Cooper, National Bureau of Standards, Washington, D. C.

Document Type

Article

Date of this Version

June 1971

Comments

Published by American Physical Society. Phys. Rev. Lett. 26, 1521 (1971). http://prl.aps.org. Copyright © 1971 American Physical Society. Permission to use.

Abstract

Broad peaks observed in the photoabsorption spectra of rare earths ∼10-20 eV above the 4d edge are attributed to transitions 4d¹⁰4f^N→4d⁹4f^N+1. Exchange interaction splits the 4d⁹4f^N+1 configuration and raises some multiplets by ∼20 eV. Autoionization to 4d⁹-4f^Nεf broadens the high levels. The interpretation extends to p→d processes observed in the absorption of synchrotron light by transition elements.