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An Algorithm for the Description of White and Characteristic Tube Spectra (11 ≤ Z ≤ 83, 10keV ≤ Eo ≤ 50keV)

Published online by Cambridge University Press:  06 March 2019

H. Ebel ,
H. Wiederschwinger ,
J. Wernisch  and
P.A. Pella
H. Ebel
Affiliation:
Institut für Angewandte und Technische Physik Technische Universität Wien, A 1040 Wien, Austria
H. Wiederschwinger
Affiliation:
Institut für Angewandte und Technische Physik Technische Universität Wien, A 1040 Wien, Austria
J. Wernisch
Affiliation:
Institut für Angewandte und Technische Physik Technische Universität Wien, A 1040 Wien, Austria
P.A. Pella
Affiliation:
National Institute of Standards and Technology Gaithersburg, MD 20899, USA
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Extract

Kramers described the cross section of electron interaction with target atoms of atomic number Z by

where Eo is the kinetic energy of impinging electrons, and E o S) the energy of x-ray photons of the continuum, Smith et al modified this equation, introducing an exponent x, so that

We applied the cross-section σS, E to the evaluation of experimental results. The evaluation of the measured spectral responses of the x-ray signals nE was performed by

where f(deff) describes the absorption of x-rays of energy E in the target, RE accounts for backscattering of electrons, DE quantifies the efficiency of x-ray detection within the solid angle Ω.

Type
X. Mathematical Methods in X-Ray Spectrometry (XRS)
Information
Advances in X-Ray Analysis , Volume 35 , Issue B: First Pacific-International Congress on X-ray Analytical Methods (PICXAM). Fortieth Annual Conference on Applications of X-ray Analysis, August 7-16, 1991 , 1991 , pp. 721 - 726
Copyright
Copyright © International Centre for Diffraction Data 1991

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References

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