jsyncrad-8-1103-2001.pdf (536.76 kB)
Download file

Multiple-electron excitation in X-ray absorption: a simple generic model

Download (536.76 kB)
journal contribution
posted on 02.03.2010, 16:53 by Mervyn Roy, J. D. Lindsay, S. Louch, Steve J. Gurman
The probability of multiple-electron excitation in X-ray absorption is calculated using a simple generic model. The model permits calculations to be made for all atoms with little input data or computing effort. The high-energy limit of this probability, which gives the usual EXAFS amplitude reduction factor, is calculated in the `sudden approximation' using Slater orbitals. Good agreement with experiment is found. The energy dependence of this probability is also calculated using a simple model form of perturbing potential and found to agree well with experiment for rare gas atoms. The effect on the X-ray absorption coefficient of including multiple-electron excitations is also determined and is found to be small, again in agreement with observation.

History

Citation

Journal of Synchrotron Radiation, 2001, 8 (4), pp. 1103-1108.

Published in

Journal of Synchrotron Radiation

Publisher

International Union of Crystallography

issn

0909-0495

Copyright date

2001

Available date

02/03/2010

Publisher version

http://scripts.iucr.org/cgi-bin/paper?S0909049501008160

Language

en

Usage metrics

Categories

Keywords

Exports