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Use of a CCD-Based Area Detection System on a Fibre Diffractometer

Published online by Cambridge University Press:  06 March 2019

S. Hanna  and
A.H. Windle
S. Hanna
Affiliation:
Department of Materials Science and Metallurgy University of Cambridge Pembroke Street Cambridge, CB2 3QZ, U.K.
A.H. Windle
Affiliation:
Department of Materials Science and Metallurgy University of Cambridge Pembroke Street Cambridge, CB2 3QZ, U.K.
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Abstract

We describe a new X-ray fibre diffractometer, consisting of a commercial X-ray sensitive video camera coupled to a conventional 3-circle goniometer in place of a more traditional single-point detector. The active element of the video camera is a charge-coupled device (CCD). Diffraction images, obtained at various goniometer settings, are transformed into reciprocal space, and combined to give a complete section through the origin and parallel to the symmetry axis of cyiindrically averaged reciprocal space. A greater density of measurements is needed in the vicinity of the reciprocal fibre axis in order to avoid information loss due to the curvature of the Ewald sphere. The pros and cons of using CCD's as X-ray detectors are discussed and sample results from polymer fibres are shown.

Type
VI. Polymer Applications of X-Ray Scattering
Information
Advances in X-Ray Analysis , Volume 38: Forty-third Annual Conference on Applications of X-ray Analysis , 1994 , pp. 503 - 510
Copyright
Copyright © International Centre for Diffraction Data 1994

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