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First results from a new perfect‐crystal small‐angle scattering instrument using a bent comb‐shaped analyzer crystal
Author(s) -
Niel L.,
Rauch H.,
Seidl E.
Publication year - 1991
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889891005538
Subject(s) - bent molecular geometry , spectrum analyzer , optics , detector , crystal (programming language) , perfect crystal , diffraction , resolution (logic) , materials science , position (finance) , physics , computer science , finance , artificial intelligence , economics , composite material , programming language
The use of a bent comb‐shaped analyzer crystal in a perfect‐crystal SANS instrument makes possible the simultaneous measurement of many points of the rocking curve by means of a one‐dimensional position‐sensitive detector. This design permits high‐resolution measurements with much higher efficiency than standard techniques. Results from our prototype instrument, using seven reflecting plates, are in very good agreement with predictions based on the dynamic theory of neutron diffraction.