New consistency tests for high-accuracy measurements of X-ray mass attenuation coefficients by the X-ray extended-range technique

Acta Crystallographica. Section A, Foundations of Crystallography
C T ChantlerZ Barnea

Abstract

An extension of the X-ray extended-range technique is described for measuring X-ray mass attenuation coefficients by introducing absolute measurement of a number of foils - the multiple independent foil technique. Illustrating the technique with the results of measurements for gold in the 38-50 keV energy range, it is shown that its use enables selection of the most uniform and well defined of available foils, leading to more accurate measurements; it allows one to test the consistency of independently measured absolute values of the mass attenuation coefficient with those obtained by the thickness transfer method; and it tests the linearity of the response of the counter and counting chain throughout the range of X-ray intensities encountered in a given experiment. In light of the results for gold, the strategy to be ideally employed in measuring absolute X-ray mass attenuation coefficients, X-ray absorption fine structure and related quantities is discussed.

References

Aug 22, 2001·Journal of Synchrotron Radiation·P D'Angelo, N V Pavel
Aug 22, 2001·Journal of Synchrotron Radiation·J J Rehr, A L Ankudinov
Jul 15, 2003·Physical Review Letters·C Q TranZ Barnea
Dec 24, 2009·Journal of Synchrotron Radiation·Mario Ulises Delgado-Jaime, Pierre Kennepohl
Dec 24, 2009·Journal of Synchrotron Radiation·Mario Ulises Delgado-JaimePierre Kennepohl
Sep 28, 2010·Physical Review Letters·J D Bourke, C T Chantler

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Citations

Oct 25, 2012·Journal of Synchrotron Radiation·Christopher T ChantlerMartin D de Jonge
Jun 15, 2013·Journal of Synchrotron Radiation·N Abd El AllP Fornasini
Nov 5, 2013·The Review of Scientific Instruments·B RavelJ Smedley

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