Exact and analytic geometry of Bragg diffraction
نویسندگان
چکیده
منابع مشابه
Powder diffraction in Bragg–Brentano geometry with straight linear detectors
A common way of speeding up powder diffraction measurements is the use of one- or two-dimensional detectors. This usually goes hand in hand with worse resolution and asymmetric peak profiles. In this work the influence of a straight linear detector on the resolution function in the Bragg-Brentano focusing geometry is discussed. Because of the straight nature of most modern detectors geometrical...
متن کاملSharp-focusing Bragg-Fresnel zone plate with Laue diffraction geometry.
The impact of decreased zone height on the focal properties of hard X-ray Bragg-Fresnel zone plates has been studied by numerical simulation. Decreased zone height allows for smaller zone widths and, although the efficiency of the lens is decreased, the signal-to-background ratio in the focal plane of the lens remains at a comparatively high level. This is distinct from an analogous case of ord...
متن کاملPlasmon-enhanced Bragg diffraction
The diffraction from a single periodic metallic grating is shown to be significantly modified when a surfaceplasmon polariton wave is excited at the metal-dielectric interface. In particular, vanishing diffraction orders in accordance with scalar diffraction theory, are generated in the presence of the surface wave. This modification is analytically explained, and a plasmonic Bragg law is formu...
متن کاملX-ray Diffraction Analysis of Polymeric Solid Using Bragg-Brentano Geometry
The crystallographic structural parameters were analyzed using X’Pert-MPD XRD a laboratory X-ray source having BraggBrentano parafocusing optics. The line profile characteristics was obtained using ProFit -software based on Pseudo-Voigt profile function and is applicable for the study of interplaner spacing d, crystallite size Dhkl, percent crystallinity %C, macromolecular orientation and other...
متن کاملBragg thickness criterion for intracavity diffraction gratings
The grating thickness limit lFP between the Raman–Nath and the Bragg diffraction regimes is calculated for an index grating placed in an asymmetric Fabry–Perot resonator with a totally reflecting back mirror and compared with that which was obtained for the same grating with no cavity lM . Owing to the increase of the effective interaction length inside the Fabry–Perot cavity, the stronger the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1993
ISSN: 0108-7673
DOI: 10.1107/s0108767378089199