Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-28T03:45:58.708Z Has data issue: false hasContentIssue false

A Fast Algorithm for Fundamental Parameter Calculations

Published online by Cambridge University Press:  06 March 2019

Ch. Pöhn
Affiliation:
Institut für Angewandte und Technische Physik Technische Universitát Wien, A 1040 Wien, Austria
H. Ebel
Affiliation:
Institut für Angewandte und Technische Physik Technische Universitát Wien, A 1040 Wien, Austria
Get access

Abstract

A fundamental parameter algorithm for quantitative XFA with characteristic Kα- and Lα-radiations of the specimens is presented. This allows an application to programmable pocket calculators or a fast evaluation of measured countrates for the unknown composition of the specimen by means of PCs. For the practical utilization we need the incidence angle and the takeoff angle of the x-rays in the instrument, the high voltage V in kV which is supplied to the x-ray tube (E0) and reference measurements on either pure elements or a single reference specimen. The quality of the analytical results depends on the concentration differences of the unknown specimen and the reference specimen.

Type
X. Mathematical Methods in X-Ray Spectrometry (XRS)
Copyright
Copyright © International Centre for Diffraction Data 1991

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.)

References

1 Sherman, J., Spectrochimica Acta 7, 283 (1955)10.1016/0371-1951(55)80041-0Google Scholar
2 Kramers, H. A., Phil.Mag. 46, 836 (1923)10.1080/14786442308565244Google Scholar
3 McMaster, W. H., del Grande, H. K., Mallett, J. H. and Hubbell, J. H. Compilation of X-Ray Cross-Sections, UCRL-50174, Sect.II, Rev.l. Lawrence Radiation Laboratory, University of California, Livermore, CA. (1969)Google Scholar
4 Pbhn, Ch., Wernisch, J. and Hanke, W., X-Ray Spectrometry 14 (1985) 120 Google Scholar
5 Criss, J. and Birks, L. S., Anal.Chem. 40 (1968) 1080 10.1021/ac60263a023Google Scholar