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Neutron Spin Echo Spectroscopy
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mezei, Ferenc |
| Copyright Year | 2013 |
| Abstract | Inelastic neutron scattering is poten tially the ultimate tool for the investiga tion of atomic and magnetic dynamics on the microscopic scale in condensed matter. This is because of the unique feature that both the wavelength and the energy of thermal neutron radiation fall within the range relevant to the dyna mics of common solids and liquids viz. 1-10 A and 1-100 meV ≡ 0.25 25 THz. Neutron scattering is the only microsco pic probe able to provide the whole pic ture in space and time although there are a number of other methods, which yield partial information. For example, X-ray scattering is very powerful in the deter mination of atomic structures, but since X-ray quanta have energies in the 10 keV range, it is not practical (at least so far) to observe changes on the meV or μeV scale associated with atomic motions. To a very rough approximation, the energy changes of the scattered radia tion can be looked upon as Doppler shifts caused by the motions of the scat tering atoms. In contrast, with light scat tering one can observe easily any energy change that might occur, but the basic wavelength of several 1000 A restricts the space domain studied to one of simi lar size, i.e. to practically macroscopic regions. Or, to take an example at the other extreme, nuclear magnetic reso- |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.europhysicsnews.org/articles/epn/pdf/1985/04/epn19851604p1.pdf |
| Alternate Webpage(s) | http://www.oxfordneutronschool.org/2013/Lectures/Pappas-Neutron_Spin_Echo.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
