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An experimental investigation of extrapolation methods in the derivation of accurate unit-cell dimensions of crystals
Open accessAbstract
Measurements on X-ray photographs of cylindrical specimens of different absorption and thickness taken in a camera without eccentricity show that the absorption error in the apparent unit-cell dimension a is proportional to cos 2 θ/sinθ + cos 2 θ/θ. The plot of a against ½(cos 2 θ/sinθ + cos 2 θ/θ) is linear down to θ = 30° for all four specimens used. The extrapolated values for a are in good agreement, and this extrapolation function is accordingly recommended in the case of data from well constructed cameras. Other extrapolation functions are also considered, and the effect of various sources of error discussed. A table of ½(cos 2 θ/sinθ + cos 2 θ/θ) is given.
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Cited by
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Metadata
- Authors
- Nelson, J. B., & Riley, D. P.
- Venue
- Proceedings of the Physical Society
- Publisher
- IOP Publishing
- Published
- 1945-05-01
- Volume
- 57
- Issue
- 3
- Pages
- 160-177
- ISSN
- 0959-5309 (ISSN-L)
- OpenAlex
- W2031206824
- Cited by
- 1,433
- References
- 0
- FWCI
- 9.13
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: An experimental investigation of extrapolation methods in the derivation of accurate unit-cell dimensions of crystals. https://app.cochat.ai/papers/10.1088/0959-5309/57/3/302
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- Nelson, J. B., & Riley, D. P. (1945). An experimental investigation of extrapolation methods in the derivation of accurate unit-cell dimensions of crystals. Proceedings of the Physical Society. https://doi.org/10.1088/0959-5309/57/3/302
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