Results 151 to 160 of about 578,265 (196)
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Nature, 1952
THE large lattice spacings occurring in such organic matter as fibres or crystalline viruses give rise to X-ray diffraction patterns with Bragg angles of minutes of arc rather than of degrees. The neighbourhood of the direct beam is, however, for a variety of reasons, easily obscured by scattered radiation and insufficient collimation, so that special ...
W, EHRENBERG, A, FRANKS
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THE large lattice spacings occurring in such organic matter as fibres or crystalline viruses give rise to X-ray diffraction patterns with Bragg angles of minutes of arc rather than of degrees. The neighbourhood of the direct beam is, however, for a variety of reasons, easily obscured by scattered radiation and insufficient collimation, so that special ...
W, EHRENBERG, A, FRANKS
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AIP Conference Proceedings, 1990
New developments in x‐ray scattering are resulting from the use of synchrotron radiation sources, allowing study of anomalous scattering regimes with high energy resolution and polarized light. S matrix calculations of elastic scattering are in good agreement away from edges, while dispersion relations can be used to predict edge region scattering if a
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New developments in x‐ray scattering are resulting from the use of synchrotron radiation sources, allowing study of anomalous scattering regimes with high energy resolution and polarized light. S matrix calculations of elastic scattering are in good agreement away from edges, while dispersion relations can be used to predict edge region scattering if a
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Quantity and Quality of Scattered X Rays
The British Journal of Radiology, 1961The paper presents measurements of the amount and quality of radiation scattered from materials of different atomic numbers. At all energies of the primary X-ray beam used, low atomic number materials scatter the greatest quantity of radiation, the differences in the normal deep therapy range being large.
J H, MARTIN, G M, MULLER
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Nonresonant Inelastic X-ray Scattering and X-ray Raman Scattering
2016In analogy to the connections between Raman scattering and absorption in the optical regime, X-ray Raman scattering (XRS) is an alternative to X-ray absorption spectroscopy, particularly for sub-keV excitations. XRS is the nonresonant inelastic X-ray scattering (NIXS, or NRIXS) from core or semi-core electrons and has a similar energy-dependence as X ...
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X-Ray Resonance Exchange Scattering
Physical Review Letters, 1988Large resonant magnetization-sensitive x-ray scattering is predicted to occur in the vicinity of the L/sub II/, L/sub III/, and M/sub II/--M/sub V/ absorption edges in the rare-earth and actinide elements, and at the K and L edges in the transition elements.
, Hannon, , Trammell, , Blume, , Gibbs
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1984
There are two main methods for investigating the structure of solids. They are X-ray structure analysis (study of X-ray diffraction and scattering) and microscopic investigation. The first method is rather general, i.e., it can study the atomic and molecular structure of matter and also study the microstructures of heterophase systems.
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There are two main methods for investigating the structure of solids. They are X-ray structure analysis (study of X-ray diffraction and scattering) and microscopic investigation. The first method is rather general, i.e., it can study the atomic and molecular structure of matter and also study the microstructures of heterophase systems.
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X‐ray scatter removal by deconvolution
Medical Physics, 1988The distribution of scattered x rays detected in a two‐dimensional projection radiograph at diagnostic x‐ray energies is measured as a function of field size and object thickness at a fixed x‐ray potential and air gap. An image intensifier–TV based imaging system is used for image acquisition, manipulation, and analysis. A scatter point spread function
J A, Seibert, J M, Boone
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Multiple Scattering and the Polarization of X-rays
Advances in X-ray Analysis, 1980In order to improve the overall performance of energy dispersive x-ray secondary emission spectrometry one can make use of polarized x-rays. We have used polarized x-rays produced by 90° scattering to reduce the background intensity due to the primary x-ray source.An effort has been made to optimize the polarizing scatterer for the elements being ...
John D. Zahrt, Richard Ryon
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1979
An X-ray beam that passes through an absorber is attenuated. The degree of attenuation depends upon both photoabsorption and scattering processes. Scattering occurs when an X-ray photon interacts with one of the electrons of the absorbing element. If this collision is elastic (no energy is lost in the collision process), the scattering is said to be ...
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An X-ray beam that passes through an absorber is attenuated. The degree of attenuation depends upon both photoabsorption and scattering processes. Scattering occurs when an X-ray photon interacts with one of the electrons of the absorbing element. If this collision is elastic (no energy is lost in the collision process), the scattering is said to be ...
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X-ray holography with an atomic scatterer
Ultramicroscopy, 2016X-ray holography scheme with reference scatterer consisting of heavy atom as reference center and its link to an object consisting of several light atoms and using controlled variation of the alignment is represented. The scheme can reproduce an object in three dimensions with atomic resolution. The distorting factors of reconstruction are considered.
A A, Mityureva, V V, Smirnov
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