Das Reflexionsvermögen von Mosaikkristallen im Hinblick auf ihre Verwendung als Monochromatoren in Neutronenbeugungsspektrometern
- 1 June 1963
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Kristallographie
- Vol. 118 (3-4) , 263-272
- https://doi.org/10.1524/zkri.1963.118.3-4.263
Abstract
A calculation is made of the integral reflectivity of ideal mosaic crystals according to the theory of mosaic structures. Both the reflection and transmission patterns are derived for different values of the Bragg angles θ 0 used for mono chromatization, of the reduction in beam cross-section according to the Fankuchen cut, of the effective total cross-section of the monochromator material, and of the thickness of the crystal. The influence of the latter on the change in beam cross-section is estimated. An intensity formula is proposed for the problem of image formation that arises in connection with the examination of small test crystals. Some measurements on real crystals were carried out.Keywords
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