Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Modeling Core-Hole Screening in Core-Excitation Spectroscopies

Published

Author(s)

Eric L. Shirley, J A. Soininen, J J. Rehr

Abstract

We consider screening of the core-hole potential experienced by the ejected electron in core-excitation processes. This potential affects near-edge structure strongly, but it appears difficult to consistently obtain reliable screened core-hole potentials without substantial computation. Screening effects have both atomic and solid-state (ormolecular/cluster) contributions. We emphasize aspects that must be true of correct screening models, in an attempt to circumvent the need to carry out full-scale random-phase approximation (RPA) or self-consistent-field calculations of the screening. We present and discuss three spectra computed with RPA and model screened potentials, suggesting ideas to be considered in future work of developing screening models.
Citation
Physica Scripta

Keywords

core hole, model, RPA, screening, x-ray

Citation

Shirley, E. , Soininen, J. and Rehr, J. (2008), Modeling Core-Hole Screening in Core-Excitation Spectroscopies, Physica Scripta (Accessed November 3, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created October 16, 2008