Diffraction standard

Short description: Crystal used to calibrate an x-ray spectrometer

In crystallography, a diffraction standard, or calibration crystal, is a crystal used to calibrate an X-ray spectrometer to an absolute X-ray energy scale.[1] A range of materials may be used including quartz or silicon crystals.[2] There are also reports of crystals of silver behenate or silver stearate having been used for this purpose.[3][4]

## References

1. ↑ Swanson, H. E.; McMurdie, H. F.; Morris, M. C.; Evans, E. H. (June 1968). "Standard X-ray Diffraction Powder Patterns: Section 6. Data for 60 Substances". https://digital.library.unt.edu/ark:/67531/metadc13214/.
2. ↑ Cline, James P. (September 6, 2016). "Powder Diffraction SRMs". https://www.nist.gov/programs-projects/powder-diffraction-srms.
3. ↑ Blanton, T. N.; Huang, T. C.; Toraya, H.; Hubbard, C. R.; Robie, S. B.; Louër, D.; Göbel, H. E.; Will, G. et al. (June 1995). "JCPDS—International Centre for Diffraction Data round robin study of silver behenate. A possible low-angle X-ray diffraction calibration standard" (in en). Powder Diffraction 10 (2): 91–95. doi:10.1017/S0885715600014421. ISSN 0885-7156. https://www.cambridge.org/core/product/identifier/S0885715600014421/type/journal_article.
4. ↑ Finnefrock, A. C. (Jan 25, 2000). "SAXS Calibrants". https://bigbro.biophys.cornell.edu/documents/SAX_Calibrants/saxs_sphere.html.

## External links

* http://www.ccp14.ac.uk/solution/calibration/index.html
* https://bigbro.biophys.cornell.edu/documents/SAX_Calibrants/saxs_sphere.html

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