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Spectra of X-Ray Tubes with Transmission Anodes for Fundamental Parameter Analysis

Published online by Cambridge University Press:  06 March 2019

Horst Ebel ,
Maria F. Ebel ,
Christian Pöhn  and
Bernd Schoßmann
Horst Ebel
Affiliation:
Technische Universität Wien Institut für Angewandte und Technische Physik Wiedner Hauptstraße 8-10 A 1040 Wien, Austria
Maria F. Ebel
Affiliation:
Technische Universität Wien Institut für Angewandte und Technische Physik Wiedner Hauptstraße 8-10 A 1040 Wien, Austria
Christian Pöhn
Affiliation:
Technische Universität Wien Institut für Angewandte und Technische Physik Wiedner Hauptstraße 8-10 A 1040 Wien, Austria
Bernd Schoßmann
Affiliation:
Technische Universität Wien Institut für Angewandte und Technische Physik Wiedner Hauptstraße 8-10 A 1040 Wien, Austria
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Abstract

The approach for the description of the emission of white and characteristic x-rays from standard x-ray tubes is modified for an application to transmission anodes. This modification is based on the assumption of a negligible penetration depth of the electrons in comparison to the thickness of the anode. The results of our considerations are presented for Cu, Mo and W anodes with two different thicknesses. For comparison, the spectra of standard anodes which have been operated with identically high voltages and anode currents are given. A typical feature of transmission anodes is their spectral hardening of the energy distribution of emitted photons. A further interesting detail is the development of narrow band excitation anodes as can be seen from the results for Mo. With anode thicknesses of approximately 200 μm and a high voltage of 30 kv the spectral distribution is restricted to an energy ranging from 15 to 20 keV.

Type
III. XRS Techniques and Instrumentation
Information
Advances in X-Ray Analysis , Volume 36: Forty-First Annual Conference on Applications of X-ray Analysis, August 3-7, 1992 , 1992 , pp. 81 - 88
Copyright
Copyright © International Centre for Diffraction Data 1992

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