The Green's function formalism is applied to the analysis of the surface contribution to the inelastic scattering of X-rays by acoustic modes of thermal excitations in a crystal. Crystals with a cubic unit cell are analysed. It is shown that the surface contribution to thermal diffuse scattering (TD
Single-phonon X-ray scattering
โ Scribed by John S. Reid
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 628 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0010-4655
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โฆ Synopsis
Title of program: SPHZB86 Nature of physical problem Determination of single-phonon diffuse X-ray scattering in Catalogue number: AALZ lines, areas or volumes of reciprocal space at any temperature, using eigendata given by a lattice dynamical model. Evaluation Program obtainable from: CPC Program Library, Queen's Urn-of contribution to one-phonon scattering from ionic deformaversity of Belfast, N. Ireland (see application form in this tions, modelled by a shell model. issue) Method of solution Computer: Honeywell 66/80; Installation: University of The elements of the analytic solution are assembled from a Aberdeen combination of input data, tabulated scattering factors and transformation of a minimum set of eigendata. The scattering Operating system: GCOS8 is evaluated along lines in reciprocal space. ,Programming language used: FORTRAN 77 Restrictions on the complexity of the problem Zincblende structure compounds and group IV elements only; High speed storage required: 37 Kwords, plus eigendata file may be modified for other compounds. No. of bits in a word: 36 Typical running time About 40 ms per point. Peripheral used: lineprinter Reference No. of lines in combined program and test deck: 1710 [1] J.S. Reid, Acta Cryst. (1986) to be published.
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