Journal article
Measurement of the x-ray mass attenuation coefficients of gold in the 38-50-keV energy range
MT Islam, NA Rae, JL Glover, Z Barnea, MD De Jonge, CQ Tran, J Wang, CT Chantler
Physical Review A Atomic Molecular and Optical Physics | Published : 2010
Abstract
We used synchrotron x rays to measure the x-ray mass attenuation coefficients of gold at nine energies from 38 to 50keV 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. © 2010 T..
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Funding Acknowledgements
This work was funded by the Australian Research Council (ARC). The authors wish to thank the staff of APS where the experiment was performed. We acknowledge the Australian Synchrotron Research Program (ASRP) for their support of this work.