Ad
related to: quasi elastic neutron scattering
Search results
Results From The WOW.Com Content Network
In a more strict meaning, it denotes scattering processes where dynamics in the sample (such as diffusive dynamics) lead to a broadening of the incident neutron spectrum, in contrast to, e.g., the scattering from a diffusionless crystal, where the scattered neutron energy spectrum consists of an elastic line (corresponding to no energy transfer ...
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 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.
Iris is a neutron spectrometer, designed for quasi-elastic and low-energy high-resolution inelastic spectroscopy. LOQ is a small-angle neutron scattering instrument used to investigate the shape and size of large molecules, small particles, or porous materials with dimensions typically in the range of 1–100 nm.
Neutron diffraction or elastic neutron scattering is the application of neutron scattering to the determination of the atomic and/or magnetic structure of a material. A sample to be examined is placed in a beam of thermal or cold neutrons to obtain a diffraction pattern that provides information of the structure of the material.
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).
The CONUS project is searching for the fundamental process of coherent elastic scattering of neutrinos off atomic nuclei. The primary goal is to confirm the existence of this process and to use this interaction type to investigate further neutrino properties within and beyond the standard model of elementary particle physics.