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ANSTO Publications Online >
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Please use this identifier to cite or link to this item:
http://apo.ansto.gov.au/dspace/handle/10238/3198
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| Title: | X-ray mass attenuation coefficients and imaginary components of the atomic form factor of zinc over the energy range of 7.2-15.2 keV. |
| Authors: | Rae, NA Chantler, CT Barnea, Z de Jonge, MD Tran, CQ Hester, JR |
| Keywords: | Attenuation Zinc Absorption Accuracy Theoretical Data Mapping |
| Issue Date: | Feb-2010 |
| Publisher: | American Physical Society |
| Citation: | Rae, N. A., Chantler, C. T., Barnea, Z., de Jonge, M. D., Tran, C. Q., & Hester, J. R. (2010). X-ray mass attenuation coefficients and imaginary components of the atomic form factor of zinc over the energy range of 7.2-15.2 keV. Physical Review A, 81(2), 10. |
| Abstract: | The x-ray mass attenuation coefficients of zinc are measured in a high-accuracy experiment between 7.2 and 15.2 keV with an absolute accuracy of 0.044% and 0.197%. This is the most accurate determination of any attenuation coefficient on a bending-magnet beamline and reduces the absolute uncertainty by a factor of 3 compared to earlier work by advances in integrated column density determination and the full-foil mapping technique described herein. We define a relative accuracy of 0.006%, which is not the same as either the precision or the absolute accuracy. Relative accuracy is the appropriate parameter for standard implementation of analysis of near-edge spectra. Values of the imaginary components f″ of the x-ray form factor of zinc are derived. Observed differences between the measured mass attenuation coefficients and various theoretical calculations reach a maximum of about 5% at the absorption edge and up to 2% further than 1 keV away from the edge. The measurements invite improvements in the theoretical calculations of mass attenuation coefficients of zinc. © 2010, American Physical Society |
| URI: | http://dx.doi.org/10.1103/PhysRevA.81.022904 http://apo.ansto.gov.au/dspace/handle/10238/3198 |
| ISSN: | 1050-2947 |
| Appears in Collections: | Journal Articles |
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