Journal article

Measurement of the x-ray mass-attenuation coefficients of gold, derived quantities between 14 keV and 21 keV and determination of the bond lengths of gold

JL Glover, CT Chantler, Z Barnea, NA Rae, CQ Tran

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | IOP PUBLISHING LTD | Published : 2010

Abstract

The x-ray mass-attenuation coefficients of gold are measured at 91 energies between 14 keV and 21 keV using synchrotron radiation. The measurements are accurate to between 0.08% and 0.1%. The photoelectric mass-absorption coefficients and the imaginary component of the form factors of gold are also determined. The results include the LI edge and are the most accurate and extensive gold dataset available in this energy range. An analysis of the LI edge XAFS showed excellent agreement between the measured and simulated XAFS and yielded highly accurate values of the bond lengths of gold. When our results are compared with earlier measurements and with predictions of major theoretical tabulation..

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Grants

Funding Acknowledgements

We wish to acknowledge the assistance of the beamline staff, David Cookson and Garry Foran, during the experiment at the Photon Factory (ANBF). We wish to acknowledge the developmental work of Martin D de Jonge on XERT analysis techniques including the full-foil mapping technique. This work was supported by the Australian Synchrotron Research Program, which is funded by the Commonwealth of Australia under the Major National Research Facilities Program, and by grants of the Australian Research Council.