| Autor: |
C T Chudley, R. J. Elliott |
| Rok vydání: |
1961 |
| Předmět: |
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| Zdroj: |
Proceedings of the Physical Society. 77:353-361 |
| ISSN: |
0370-1328 |
| DOI: |
10.1088/0370-1328/77/2/319 |
| Popis: |
The incoherent inelastic scattering cross section of slow neutrons from liquids is calculated using a simple model in which the liquid is assumed to have appreciable short range order in a quasi-crystalline form. Diffusive motion takes place in large discrete jumps, between which the atoms oscillate as in a solid. The model predicts a definite, easily calculable cross section which is not dominated by diffusion effects as when continuous diffusion is assumed, but shows a characteristic variation with angle which could be looked for experimentally. The related pair correlation functions are dominated at small r and t by vibrational effects. Although simple and extreme the model explains several aspects of the observations of Brockhouse and Pope in 1959 and others. A brief discussion of the coherent scattering cross sections for the model is given although explicit formulae are not obtained. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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