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Optimal Calibration Curves for Guinier-Type Focusing Cameras

Published online by Cambridge University Press:  06 March 2019

Allan Brown
Allan Brown*
Affiliation:
AB Atomenergi, Studsvik, Nyköping, Sweden
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Abstract

The inclusion of an internal calibrant in specimens prepared for Guinier-type focusing cameras is a well-established practice. The true reasons for performing calibration are, however, not always clearly understood. Accordingly, procedures adopted on the basis of this calibration for converting distances measured on the film into reliable values of θ vary in detail from one laboratory to another. The possibility that calibration curves can exhibit different degrees of reliability, depending upon camera alignment, is even less generally appreciated. The following account records efforts made over the years to come to terms with these problems in order to obtain unit cell dimensions at the 0.01 % level of precision from the routine measurement of Guinier diffraction patterns.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 21: Twenty-Sixth Annual Conference on Applications of X-ray Analysis, August 3-5, 1977 , 1977 , pp. 289 - 303
Copyright
Copyright © International Centre for Diffraction Data 1977

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