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
- School of Physics, University of Melbourne, Victoria 3010 (Australia)
- Australia
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.
- OSTI ID:
- 21408250
- Journal Information:
- Physical Review. A, Vol. 81, Issue 2; Other Information: DOI: 10.1103/PhysRevA.81.022904; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION
ACCURACY
ATTENUATION
FOILS
FORM FACTORS
IMPLEMENTATION
KEV RANGE
MAGNETS
MAPPING
MASS
SPECTRA
X RADIATION
ZINC
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY RANGE
EQUIPMENT
IONIZING RADIATIONS
METALS
PARTICLE PROPERTIES
RADIATIONS
SORPTION