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Wall Effect and Detection Limit of the Proportional Counter Spectrometer

Published online by Cambridge University Press:  06 March 2019

Marja-Leena Järviner  and
Heikki Sipilä
Marja-Leena Järviner
Affiliation:
Institute of Physics, Outokumpu Oy, Espoo, Finland
Heikki Sipilä
Affiliation:
Institute of Physics, Outokumpu Oy, Espoo, Finland
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Abstract

The detection limit of the proportional counter spectrometer is determined by the low-energy background caused by the wall effect. The choice of the filling gas of the proportional counter has been studied to minimize the background. Detection limits (3σ) for different elements have been calculated. Theoretical results have been compared with the experimental value obtained with Cd-109 and Am-24l excitation. The results are applied to the analysis of metal concentrations in oil samples and mapping the contents of zinc in the bark of living trees with a portable XRF-analyzer.

Type
IX. Other XRF Applications
Information
Advances in X-Ray Analysis , Volume 27: Thirty-Second Annual Conference on Applications of X-ray Analysis, August 1-5, 1983 , 1983 , pp. 539 - 546
Copyright
Copyright © International Centre for Diffraction Data 1983

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References

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