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On the correction of lattice spacings for refraction

Published online by Cambridge University Press:  24 October 2008

A. J. C. Wilson
Affiliation:
Cavendish LaboratoryCambridge

Extract

The increase in the angle of reflexion from a powdered crystal varies from (1 − n) tan θ to (1 − n) (tan θ + cot θ) as its absorption increases. In either case the true lattice spacing of a cubic crystal is obtained by increasing the extrapolated lattice spacing by a fraction 1 − n of itself. The divergence of the reflected beam by refraction is small in comparison with other causes of line width.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1940

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References

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