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Chantler, Christopher T.; Barnea, Z.; Tran, Chanh Q.; Tiller, Justine B.; Paterson, David

doi:10.1023/a:1006923329884

Cited by 30 publications

(12 citation statements)

References 4 publications

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“…This approach is an essential ingredient in the recent investigation of copper form factor measurements. 12,19 The simplicity of the method and the ease with which it can be automated renders it suitable as a test in a large variety of experiments. Although our examples presented situations in which a single additional harmonic was Saturation effects will affect the low attenuation region of this plot and will thus be clearly separated from those of harmonic components and dark current fluctuations.…”

Section: Discussionmentioning

confidence: 99%

Quantitative determination of major systematics in synchrotron x‐ray experiments: seeing through harmonic components

et al. 2003

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In line with an ongoing programme to determine accurately x-ray attenuation coefficients, we have developed a method for the quantitative determination of the effect on experimental results of monochromator harmonic components in a synchrotron beam. The technique can be adapted to suit a wide variety of experiments, and is of particular interest because it determines the effect of the harmonic components directly. This avoids the necessity for modelling and is therefore robust. Results of a direct determination of the effect of harmonic components illustrate the power of the technique. We extended the technique to quantify the effects of dark current-induced errors.

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Section: Discussionmentioning

confidence: 99%

Quantitative determination of major systematics in synchrotron x‐ray experiments: seeing through harmonic components

et al. 2003

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“…While the original idea is relatively straightforward (Chantler et al, 1999), and developed earlier ideas of Barnea, Creagh and others (Mica et al, 1985), the detailed implementation has yielded an extraordinary richness of physical insight and technical development, giving rise recently to two new fields: of nanoroughness measurement and inelastic mean-freepath measurement . While the original idea is relatively straightforward (Chantler et al, 1999), and developed earlier ideas of Barnea, Creagh and others (Mica et al, 1985), the detailed implementation has yielded an extraordinary richness of physical insight and technical development, giving rise recently to two new fields: of nanoroughness measurement and inelastic mean-freepath measurement .…”

Section: Overviewmentioning

confidence: 99%

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

et al. 2012

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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.

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“…Our motivation for measuring the x-ray mass attenuation coefficients of gold was to test our suite of measurement techniques, the X-ray Extended Range Technique (XERT) [16][17][18], for a high-Z element in an energy range clearly removed from the region of the K and L edges. At high energies x-ray absorption is almost purely an atomic effect.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the x-ray mass attenuation coefficients of gold in the38–50-keV energy range

et al. 2010

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We used synchrotron x rays to measure the x-ray mass attenuation coefficients of gold at nine energies from 38 to 50 keV with accuracies of 0.1%. Our results are much more accurate than previous measurements in this energy range. A comparison of our measurements with calculated mass attenuation coefficients shows that our measurements fall almost exactly midway between the XCOM and FFAST calculated theoretical values, which differ from one another in this energy region by about 4%, even though the range includes no absorption edge. The consistency and accuracy of these measurements open the way to investigations of the x-ray attenuation in the region of the L absorption edge of gold.

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Cited by 30 publications

References 4 publications

Quantitative determination of major systematics in synchrotron x‐ray experiments: seeing through harmonic components

Quantitative determination of major systematics in synchrotron x‐ray experiments: seeing through harmonic components

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

Measurement of the x-ray mass attenuation coefficients of gold in the38–50-keV energy range

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