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Improving the Detection Limit in Wavelength Dispersive XRF

Published online by Cambridge University Press:  06 March 2019

Heikki Sipilä
Heikki Sipilä*
Affiliation:
Outokumpu Oy, Institute of Physics, SF-02200 Espoo 20, Finland
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Abstract

The origin of the background under the signal in the wavelength dispersive XRF has been investigated. The methods of minimizing the background are presented. The bremsstrahlung is eliminated by using a primary filter in front of the X-ray tube. The background generated by the X-ray detector is decreased with a pulse risetime and a pulse interval analyzer. For example, in the fixed uranium spectrometer channel a 500-fold improvement of the peak-to-background ratio was achieved.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 24: Twenty-Ninth Annual Conference on Applications of X-ray Analysis, August 4-8, 1980 , 1980 , pp. 333 - 335
Copyright
Copyright © International Centre for Diffraction Data 1980

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References

1. Sipila, H. and Kiuru, E., U.S. Patent No, 4075486.Google Scholar
2. Sipila, H. and Kiuru, E., Advances in X-Ray Analysis, 20, 555–563, (1977).Google Scholar