Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-26T06:07:58.820Z Has data issue: false hasContentIssue false

Electron Ionization Cross Sections for Atomic Subshells

Published online by Cambridge University Press:  31 January 2003

Peter Rez
Affiliation:
Department of Physics and Astronomy and Center for Solid State Science, Arizona State University, Tempe, AZ 85287-1504, USA, and EMISPEC, 2050 S. Cottonwood, Tempe, AZ 85282, USA
Get access

Abstract

Ionization of atoms is the first step in many analytical procedures. The cross section for ionizing a particular atomic shell is essential for calculating the magnitude of analytical signals. Calculations using atomic wave functions for various shells of all elements relevant for X-ray microanalysis over a range of electron energies up to 400 keV were performed. The calculations for high energies above threshold can be considerably simplified by using the mathematical form of the Bethe ridge that dominates the scattering in this region. Corrections for exchange at low energies above threshold are incorporated in these calculations. A selection of results showing the effects of different approximations on ionization cross sections for K, L, and M shells is presented.

Type
Microanalysis
Copyright
© 2003 Microscopy Society of America

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)