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On Small-Angle Critical Scattering
The Journal of Chemical Physics, 1962Recent theoretical studies of simplified models of cooperative assemblies of atoms or molecules suggest that the pair correlation function G(r) at the critical is not given by the Ornstein—Zernike (O.Z.) expression but that this relation becomes asymptotically valid for large distances r away from the critical.
G. W. Brady, H. L. Frisch
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Small angle scattering of electrons
Nuclear Physics, 1960The small angle scattering of 615 keV electrons has been studied on N, A, Kr and Xe gases. It has been found that if the electron cloud of atoms is considered in Hartree representation, for angles ϑ < 1.5 × 10−3 radians, covered by our measurements, the differential cross sections for elastic and inelastic scattering are in agreement with the theory ...
I. Berkes, I. Demeter
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Small-Angle Neutron Scattering
1997Small-angle neutron scattering (SANS) experiments from networks were initiated by Benoit and collaborators in the mid-1970s. Currently, SANS is an important major technique used in studying network structure and behavior. Its importance lies in its being a direct method with which observations may be made at the molecular-length scale without the need ...
Burak Erman, James E. Mark
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Elastic scattering at small angles of protons
Nuclear Physics A, 1978Abstract Differential cross sections and asymmetries are obtained from elastic scattering, between 0° and 7°, of 36.2 MeV polarized protons by C, Al, Fe and Ni natural targets.
A. Venaglioni +7 more
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Small-angle neutron scattering
2000Abstract Small-angle scattering (SAS) of X-rays or neutrons arises from scattering density fluctuations of the order 10—100 A. In biological studies, samples are usually solutions of macromolecules in this size range. Depending on the experimental conditions such as macromolecular concentration, for example, SAS provides information on ...
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Limits of small angle scattering theory
Applied Optics, 1987On decrit les resultats d'une comparaison de la theorie avec les simulations de Monte Carlo. En utilisant des profils d'attenuation identiques et des fonctions de diffusion volumiques, la validite de la theorie des petits angles peut etre directement ...
Donald R. Crawford +2 more
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1994
Small-angle X-ray scattering (SAXS) was discovered in 1938 by A. Guinier.(1) It is now a powerful method for characterizing catalysts (particle size, surface area) and disordered materials such as gels, sols, defective alloys, porous oxides or carbons, polymers.
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Small-angle X-ray scattering (SAXS) was discovered in 1938 by A. Guinier.(1) It is now a powerful method for characterizing catalysts (particle size, surface area) and disordered materials such as gels, sols, defective alloys, porous oxides or carbons, polymers.
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Small Angle Scattering of Neutrons
Physical Review, 1951The differential and total scattering cross sections have been calculated for slow neutrons impinging on crystalline spheres whose radii are very much greater than the neutron wavelength. The results for the differential cross section show that when the difference, $\ensuremath{\rho}$, between the neutron phase shift in traversing the particle diameter
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Small-Angle Scattering Technique
2019This chapter provides a basic overview of SAXS and SANS techniques, which includes definitions of the basic notions, description of main properties of x-rays and neutrons, a general mathematical background which describes the physical processes in a scattering experiment, and main procedures in experimental data analysis and extraction of structural ...
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Small Angle Neutron Scattering
2016Recent progress on materials for hydrogen storage have pointed out that kinetics and thermodynamics can be modified by nano-confinement of hydrides in porous scaffolds. The investigation of the structural features of these particular systems is challenging with conventional methods, for instance due to the lack of peaks in the diffraction pattern ...
Sabrina Sartori, Kenneth D. Knudsen
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