Abstract
The integrated intensity of a Laue diffraction on an elastically bent crystal is calculated analytically and numerically on the basis of Takagi's dynamical theory of diffraction for a distorted crystal. Crystal anisotropy is taken into account. The calculated values are compared with the measured ones for the nonsymmetrical Laue diffraction (111) using CuKα and MoKα radiations; μt being 0.14 to 5.6 and deformations [e] in the range of 2 × 10−5 to 4 × 10−4. The measurements are carried out on a double crystal diffractometer in the non-dispersive arrangement. The agreement between the theoretical values and the experimental ones seems to be very good. Die Abhangigkeit des integralen Reflexionsvermogens von der Deformation wird fur einen homogen gebogenen Idealkristall analytisch und numerisch ausgerechnet, wobei von der analytischen Losung der Takagischen Gleichung ausgegangen wird. Fur den Fall der unsymmetrischen Lauebeugung am Si werden die berechneten Werte mit den gemessenen verglichen. Bei der Cu- und Mo-Strahlung betragt μt 0,14 bis 5,6 und die Deformation [e] 2 × 10−5 bis 4 × 10−4. Die Messung wird mittels Doppel-Kristall-Diffraktometer durchgefuhrt. Die Ubereinstimmung der Theorie mit dem Experiment erscheint sehr gut.
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