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It was applied to thermal neutron scattering since the early 1960s, notably in an article by Leon van Hove [1] and in a highly cited one by Pierre Gilles de Gennes. [2] QENS is typically investigated on high-resolution spectrometers (neutron backscattering, neutron time-of-flight scattering, neutron spin echo). It is used to investigate topics like
It was applied to thermal neutron scattering by Leon van Hove [2] and Pierre Gilles de Gennes [3] (quasielastic neutron scattering, QENS). Finally, it is sometimes used for dynamic light scattering (also known by the more expressive term photon correlation spectroscopy).
Neutron resonance spin echo is a quasielastic neutron scattering technique developed by Gähler and Golub. In its classic form it is used analogously to conventional neutron spin echo (NSE) spectrometry for quasielastic scattering where tiny energy changes from the sample to the neutron have to be resolved. In contrast to NSE, the large ...
Neutron spin echo is a time-of-flight technique. Concerning the neutron spins it has a strong analogy to the so-called Hahn echo, [13] well known in the field of NMR.In both cases the loss of polarization (magnetization) due to dephasing of the spins in time is restored by an effective time reversal operation, that leads to a restitution of polarization (rephasing).
Neutron scattering is practiced at research reactors and spallation neutron sources that provide neutron radiation of varying intensities. Neutron diffraction ( elastic scattering ) techniques are used for analyzing structures; where inelastic neutron scattering is used in studying atomic vibrations and other excitations .
These coincide with his diversified research interests, which include bulk and confined water, cement hydration kinetics, colloids, critical phenomena, dynamic light scattering, group theory, hydrogen storage materials, neutron and x-ray inelastic scattering, protein dynamics, x-ray and neutron diffraction and reflectivity, and others.
Pages in category "Neutron scattering" The following 24 pages are in this category, out of 24 total. ... Quasielastic neutron scattering; Quasielastic scattering; S ...
Electron scattering techniques have yielded clues as to the internal structure of light nuclides. Proton-neutron pairs experience a strongly repulsive component of the nuclear force within ≈ 0.5 fm (see "Space between nucleons" above). As nucleons cannot pack any closer, nearly all nuclei have the same central density. [6]