x-ray absorption

x-ray absorption

[′eks ‚rā əb′sȯrp·shən]
(electromagnetism)
The taking up of energy from an x-ray beam by a medium through which the beam is passing.
References in periodicals archive ?
If the gas density decreases, there is correspondingly less x-ray absorption, as the number density of gas molecules in the beam path has decreased.
Single energy X-ray inspection technology used to inspect food products for contamination is very effective at detecting foreign bodies that exhibit an X-ray absorption spike relative to the surrounding product's absorption.
She is planning to return to Diamond to investigate the reaction of these phases with uranium, technetium and plutonium on the B18 X-ray absorption spectroscopy beamline.
When the researchers compared the X-ray absorption data gathered by the spacecraft with computer models of distribution of normal matter across the Milky Way, they discovered that their observations couldn't be explained by a smooth, uniform distribution of gas.
Methods used will span from organic synthesis to studies of neuronal model cells, with a major contribution of a wide panel of spectroscopic techniques including NMR, EPR, mass spectrometry, fluorescence, UV-Vis, circular-dichroism, X-ray absorption spectroscopy.
X-Ray Absorption and X-Ray Emission Spectroscopy: Theory and Applications; 2 volume set
The synchrotron allows several techniques for materials characterization, that is, X-ray absorption spectroscopy (XAS), including the Extended X-Ray Absorption Fine Structure (EXAFS), X-ray diffraction (XRD), microscale X-ray fluorescence ([mu]XRF), and small angle X-ray scattering (SAXS) as well as X-ray topography.
Zhang and his PhD student Paul Duchesne took samples to a synchrotron in Taiwan, where they were able to carry out a detailed X-ray absorption spectroscopic analysis on the workings of this material.
Using a medical computed axial tomographic scanner, X-ray absorption coefficients and computer tomographic (CT) numbers, as well as their relation to wood density, were investigated (Lindgren 1991).
Drawing on his experience using x-ray absorption fine structure (XAFS) spectroscopy to study systems ranging from magnetic nanoparticles to pigments in 18th-century paintings, Calvin (natural science and mathematics, Sarah Lawrence College) presents a practical guide to this powerful scientific tool.
An approach involving polymer chemistry, computational physics and soft x-ray absorption spectroscopy identified the optimal polyfluorene polymer binder, which, when combined with silicon, achieves a specific capacity of 1,400 mAh/g, far higher than graphite-based anodes.
It should be distinguished from quantitative X-ray absorption spectroscopy of the evaporated fill (Curry 2008) to obtain plasma particle densities.