On the neutron diffraction in a crystal in the field of a standing laser wave
| Autor: | R.G. Petrosyan, K.K. Grigoryan, Armen G. Hayrapetyan |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Physics
Nuclear and High Energy Physics Condensed matter physics Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory Neutron diffraction Physics::Optics Neutron scattering Inelastic scattering Small-angle neutron scattering Inelastic neutron scattering Pseudopotential Quasielastic neutron scattering Neutron reflectometry Nuclear Experiment Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 268:2539-2543 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2010.05.052 |
| Popis: | The possibility of high-energy neutron diffraction in a crystal is shown by applying the solution of time-dependent Schrodinger equation for a neutron in the field of a standing laser wave. The scattering picture is examined within the framework of non-stationary S-matrix theory, where the neutron–laser field interaction is considered exactly and the neutron–crystal interaction is considered as a perturbation described by Fermi pseudopotential (Farri representation). The neutron–crystal interaction is elastic, and the neutron–laser field interaction has both inelastic and elastic behaviors which results in the observation of an analogous to the Kapitza–Dirac effect for neutrons. The neutron scattering probability is calculated and the analysis of the results are adduced. Both inelastic and elastic diffraction conditions are obtained and the formation of a “sublattice” is illustrated in the process of neutron–photon–phonon elastic interaction. |
| Databáze: | OpenAIRE |
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