Results 161 to 170 of about 28,258 (199)
Some of the next articles are maybe not open access.
Diffusion studies using quasi-elastic neutron scattering
2000Quasi-elastic neutron scattering allows to study molecular diffusion in condensed or adsorbed phases. Diffusion coefficients can be derived, without a model, over space scales where molecular motion follows Fick’s law. Furthermore, using jump diffusion models, one can determine characteristic times and distances for the elementary jumps.
openaire +2 more sources
Incoherent scattering law for neutron quasi-elastic scattering in liquid crystals
Molecular Physics, 1975The incoherent scattering law for neutron quasi-elastic scattering in liquid crystals is calculated using a classical formalism including (anisotropic) self-diffusion, rotational motion along the long molecular axis and short time vibrational behaviour. Explicit expressions are given for oriented as well as for unoriented liquid crystals.
A. J. Dianoux, F. Volino, H. Hervet
openaire +1 more source
Proton-neutron quasi-elastic scattering at 991 MeV
Il Nuovo Cimento A, 1967The proton-proton and proton-neutron elastic-scattering angular distributions have been measured at 1.69 GeV/c (=991 MeV) from 14.5° to 150° c.m.s. using fast scintillation counters in conjunction with magnetic-momentum analysis. In both cases, the forward elastic cross-sections are considerably in excess of their respective optical-theorem minima, the
T. A. Murray +4 more
openaire +1 more source
A Practical Guide to Quasi-elastic Neutron Scattering
2020The technique of Quasi-Elastic Neutron Scattering (QENS) is a powerful experimental tool for extracting temporal and spatial information at the nanoscale from both soft and hard condensed matter systems. However, while seemingly simple, the method is beset with sensitivities that, if ill considered, can hinder data interpretation and possibly ...
openaire +1 more source
Quasi-elastic neutron scattering study of AlCl3 aqueous solution
Solid State Communications, 1978Abstract Quasi-elastic neutron scattering from protons in AlCl 3 aqueous solution has been measured by the use of a triple-axis spectrometer. Assuming the existence of two different kinds of water molecules, either in free state or in bound state, the whole shape of energy spectra of scattered neutrons was analyzed.
T. Sakuma, S. Hoshino, Y. Fujii
openaire +1 more source
Octave program for fitting quasi-elastic neutron scattering data
Physica B: Condensed Matter, 2019Abstract Here we describe a new program, written in Octave version 4.2.1, freely available to run in both Linux and Windows systems, called ZTR.m. ZTR.m is one of a series designed to exclusively mimic and model quasielastic neutron scattering (QENS) data on water, ranging from that confined in nano-pores to bulk water.
Aldridge, Laurence (Laurie) P. +2 more
openaire +2 more sources
Incoherent quasi-elastic neutron scattering in water-PEG solutions
Physica B: Condensed Matter, 1997Abstract We report high-resolution (7 μeV, half-width at half-maximum, HWHM) incoherent quasi-elastic neutron scattering data performed on mixtures of Poly(Ethylene Glycol), molecular weight (M.W.) 600 Da, with water. Both samples were prepared using H 2 O and D 2 O in order to be able to separate the polymer dynamics and the hydration water dynamics.
CRUPI, Vincenza +5 more
openaire +3 more sources
On the quasi-elastic magnetic scattering of slow neutrons
Physica, 1963Synopsis It is shown that the imaginary part of the spin correlation function can be interpreted as the function which describes the propagation of a disturbance in the magnetization. This is a generalization of Van Hove's work for a gas or liquid.
openaire +1 more source