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X-Ray Fluorescence Analysis of Alloy and Stainless Steels Using a Mercuric Iodide Detector*

Published online by Cambridge University Press:  06 March 2019

Warren C. Kelliher  and
W. Gene Maddox
Warren C. Kelliher
Affiliation:
NASA Langley Research Center Hampton, Virginia
W. Gene Maddox
Affiliation:
NASA Langley Research Center Hampton, Virginia
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Extract

Energy dispersive x-ray fluorescence (XRF) spectrometry has been used extensively for some time now to do accurate and rapid analysis of a variety of samples. Most XRF Systems today use cryogenically cooled Si(Li) detectors to obtain the resolution needed for analysis of samples containing several elements. The need for the cryogenic coolant results in these XRP systems being rather large and not readily adaptable to portable devices. Detectors that require no cooling, or at least require only cooling obtainable by electrical weans, offer a definite advantage over cryogenically cooled detectors for use in portable devices. Mercuric iodide (HgI2) detectors are one type of such room-temperature detectors. The major disadvantage of any room-temperature detector has been the poor eneygy resolution associated with them.

Type
VII. XRF Techniques, Instrumentation and Mathematical Models
Information
Advances in X-Ray Analysis , Volume 31: Thirty-Sixth Annual Conference on Applications of X-ray Analysis, August 3-7, 1987 , 1987 , pp. 439 - 444
Copyright
Copyright © International Centre for Diffraction Data 1987

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Footnotes

*

Work supported by NASA contract NCC1-92.

References

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