Results 291 to 300 of about 215,325 (316)
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Kinematics of small angle scattering

The Journal of Chemical Physics, 1974
In beam-recoil measurements of the scattering of molecules by electrons or photons, deflected molecules are observed at very small angles, comparable to the angular divergences of the observed and crossing beams. A kinematic analysis is presented that explicitly includes the effects of these divergences.
M. G. Fickes, R. C. Stern
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Small-angle scattering of polyelectrolyte solutions

Macromolecules, 1984
Calcul de l'intensite de diffusion aux petits angles; point maximum g m de l'intensite de diffusion; comparaison avec les resultats ...
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Instrumentation for Small-Angle Scattering [PDF]

open access: possible, 1995
A review of small-angle X-ray (SAXS) and small-angle neutron (SANS) scattering instruments is given. The difference between long-slit and pinhole collimation and the influence of a broad band-pass monochromator are discussed with respect to the smearing of the measured scattering curves. The various components of SAXS setups are described: conventional
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Small angle scattering and asphaltenes [PDF]

open access: possibleJournal of Physics: Condensed Matter, 2006
Petroleum is a mixture of organic material consisting of a series of molecules with increasing molecular weight but with decreasing carbon to hydrogen ratios. This monotonic trend leads to distinctive properties of each class, cut by solvents. Asphaltenes are a class soluble in toluene but not in heptane.
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Small-angle scattering and diffraction

Synchrotron Radiation News, 2000
(2000). Small-angle scattering and diffraction. Synchrotron Radiation News: Vol. 13, No. 5, pp. 10-16.
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On Small-Angle Critical Scattering

The Journal of Chemical Physics, 1962
Recent 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 X-Ray Scattering

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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Elastic scattering at small angles of protons

Nuclear Physics A, 1978
Abstract 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

1997
Small-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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Small-angle neutron scattering

2000
Abstract 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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