| Автор | A J C Wilson |
| Дата выпуска | 1970-09-01 |
| dc.description | The radial variation of intensity in reciprocal space is ordinarily the main source of displacement and broadening of powder diffraction profiles, and the usual tangent-plane approximation is adequate for the problem. When the main variation of intensity is perpendicular to the reciprocal radius vector a tangent-paraboloid approximation is necessary. For a layer structure with not too closely spaced random mistakes the centroid displacement of the hk0 reflections is approximately α(2d<sub>hk0</sub>σ)<sup>1/2</sup>/π<sup>2</sup>, where 2α is the probability of a mistake per unit distance, d<sub>hk0</sub> is the interplanar spacing of the reflection in question and σ is the range over which the profile is measured. The additional variance of the profile under the same conditions is approximately fraction one-thirdσ times the centroid displacement. More complex expressions are given, valid for somewhat larger values of α or smaller values of σ. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Tangential contribution to centroid displacement and variance of powder diffraction profiles |
| Тип | note |
| DOI | 10.1088/0022-3727/3/9/425 |
| Electronic ISSN | 1361-6463 |
| Print ISSN | 0022-3727 |
| Журнал | Journal of Physics D: Applied Physics |
| Том | 3 |
| Первая страница | 1403 |
| Последняя страница | 1404 |
| Аффилиация | A J C Wilson; Department of Physics, University of Birmingham, PO Box 363, Birmingham 15 |
| Выпуск | 9 |
