Results 211 to 220 of about 11,915 (255)

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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Multiple Small-Angle Neutron Scattering

Journal of Neutron Research, 1999
Over the past decade, a multiple small-angle neutron scattering (MSANS) formalism has been developed to enable researchers to derive microstructural parameters from multiply-scattered small-angle neutron data. The MSANS formalism is particularly useful in ceramic science and materials research because it is applicable to samples that are thicker (> ...
Gabrielle Long, Susan Krueger, Andrew Allen   +2 more
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Small angle scattering of fast neutrons

Nuclear Instruments and Methods, 1971
Abstract The reasons for interest in small angle scattering of fast neutrons are outlined. Apparatus developed for investigating small angle scattering of 3.5 MeV neutrons emitted in the 2H(d,n)3He reaction using a 1 MeV accelerator is described and its performance assessed.
K Mosood Ali, R.B. Galloway, D.G. Vass
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Investigations on small angle scattering with neutrons

Bulletin de la Société française de Minéralogie et de Cristallographie, 1967
L'application des neutrons très lents à la diffraction aux petits angles des réseaux déformés de longue période ou de grandes dimensions, offre des avantages par rapport à la diffraction des rayons X, proprement dite : — l'élimination de la double diffraction de Bragg.
Springer, T., Schmatz, W.
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Small angle neutron scattering in a superparamagnet

Journal of Magnetism and Magnetic Materials, 1992
Abstract Small angle neutron scattering (SANS) measurements and neutron depolarisation have been performed in superparamagnetic Fe particles. The particles size and interparticle distance are close to the values obtained from electron microscopy and magnetization.
I. Mirebeau, C. Bellouard, M. Hennion, J.L. Dormann, C. Djega-Mariadassou, M. Tessier   +5 more
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Neutron-proton scattering at small angles

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1955
Abstract Neutron-proton scattering has been measured from 6 to 61.5° c.m. for neutrons of effective energy 105 ± 3 and 137 + 5 MeV using a liquid hydrogen scatterer and a large neutron counter. The results confirm previous measurements and show a near symmetry around 90° at 105 MeV, and a fairly definite asymmetry at 137 MeV.
J. J. Thresher, R. G. P. Voss, Robert Wilson   +2 more
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Small angle neutron scattering in Ni3Al

Journal of Applied Physics, 1982
The temperature dependence of small angle neutron scattering in weakly ferromagnetic Ni3Al has been investigated by means of multi-detector small-angle spectrometers at A.E.R.E. Harwell and I.L.L. Grenoble. Measurements are reported in three stoichiometric samples with residual resistivity ratios [RRR=ρ(293 K)/ρ(4.2 K)] of up to 40 and in a Ni rich ...
N. R. Bernhoeft, I. Cole, G. G. Lonzarich, G. L. Squires   +3 more
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Small angle neutron scattering by opals

Physics and Chemistry of Minerals, 1997
Micro- and non-crystalline opals, chalcedony and flint show diffuse small angle neutron scattering (SANS). Precious opals give rise to two additional intensity maxima at very small scattering angles which are due to Bragg reflections from the closest packed non-crystalline silica spheres.
H. Graetsch, K. Ibel
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An introduction to small-angle neutron scattering

Journal of Applied Crystallography, 1988
Neutron and X-ray small-angle scattering provide, along with electron microscopy and diffraction, the principal techniques for the microscopic characterization of materials. Neutron, X-ray and electron beams each have quite different properties. In fact, each has unique advantages.
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Small Angle Neutron Scattering on Polymers

Journal of Neutron Research, 1999
Many polymer molecules can be isotopically labelled by substituting deuterium for hydrogen on the polymer chain. The labelling method minimally perturbs the thermodynamics of polymeric systems while providing superb contrast for neutron experiments. In this article, some of the uses of small angle neutron scattering and neutron reflectivity for the ...
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