Results 151 to 160 of about 28,258 (199)
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New opportunities in quasi elastic neutron scattering spectroscopy
Physica B: Condensed Matter, 2001The high energy resolution usually required in quasi elastic neutron scattering (QENS) spectroscopy is commonly achieved by the use of cold neutrons. This is one of the important research areas where the majority of current work is done on instruments on continuous reactor sources.
F Mezei, M Russina
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Bound water fractions from quasi-elastic neutron scattering
Solid State Communications, 1981Abstract Quasi-elastic neutron scattering measurements of AlCl 3 aqueous solution are analysed to derived the ratio of bound to solvent water molecules. We find that the ratio depends on the nature of the binding of the water molecules in the hydration shell and in the solvent.
P. Martel, B.M. Powell
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Future directions in quasi-elastic neutron scattering
Physica B: Condensed Matter, 1992Several experiments are described which highlight the most important parameters that have to be kept under control to ensure a successful outcome. Subsequently, some instruments are presented which still have to be developed but of which the concepts have already been proved.
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Quasi‐elastic neutron scattering in gels and solutions
Makromolekulare Chemie. Macromolecular Symposia, 1993AbstractMeasurements of swelling pressure, neutron spin‐echo scattering, and dynamic light scattering were made in an end‐linked poly(dimethylsiloxane) (PDMS) gel swollen to equilibrium in a good solvent (toluene) and also in the equivalent solution. The macroscopic osmotic modulus is depressed in the gel. Neutron spin echo observations at intermediate
Erik Geissler +5 more
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Quasi elastic scattering of slow neutrons in pentanol
Physics Letters A, 1967Abstract The energy analysed angular distributions for pentanol at room temperature have been studied on a triple-axis crystal spectrometer.
S. Râpeanu, N. Iliescu
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Neutron quasi-elastic scattering in materials research
Bulletin of Materials Science, 1985The paper reviews the quasi-elastic neutron scattering activities at the Bhabha Atomic Research Centre and demonstrates how this technique gives information on rates and geometries of stochastic motions in liquids and solids.
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Quasi-elastic neutron scattering study of hydrated DNA
Chemical Physics, 2003Dynamics of water around DNA molecules was studied by incoherent quasi-elastic neutron scattering. The mean residence time is about 10 times higher than for liquid water indicating that mobility of water adsorbed on DNA is reduced very significantly. The mean residence time increases from 10 ps for the sample with 2.5 g water/g DNA to 18 ps for a water
Beta, I. A. +4 more
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Biophysical Applications of Quasi-Elastic and Inelastic Neutron Scattering
Annual Review of Biophysics and Biomolecular Structure, 1984Thermal and cold neutrons with de Broglie wavelengths in the 1 to 20 A region are versatile probes of the structure and dynamics of organic molecules. Neutron diffraction, i.e. the study of interference patterns produced by coherently scattered neutrons, has already been used exten sively in structural investigations of a wide range of biomolecular ...
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Quasi-Elastic and Inelastic Neutron Scattering
1988The method of quasi-elastic and inelastic neutron scattering is outlined and its usefulness for studying molecular motions in condensed matter is stressed. After a short introduction to the theory of neutron scattering, some details are given on quasi-elastic scattering and its application to the study of various non-periodic motions.
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Neutron transmission and quasi‐elastic neutron scattering in polymer hydrogels
Polymer Engineering & Science, 1999AbstractInvestigations of hydrogels with high water contents have recently acquired special significance. Hydrogels are crosslinked three‐dimensional networks of water‐soluble macromolecules saturated by water or water solutions of different substances. The interest in examination the fundamental physical properties for such systems is related to their
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