Abstract
OBSERVATIONS by Sturkey and Frevel1 and Hillier and Baker2 indicate that some rings in electron diffraction patterns from magnesium oxide and cadmium oxide smokes are double, and in one case (the 220 ring) it was suspected that there were five components contributing to the ring contour. Sturkey and Frevel suggested that refraction by the regularly shaped particles gave rise to the two components, although their data were not conclusive. Using the high-resolution system of the R.C.A. type E.M.U. microscope as a diffraction camera, we have attempted to find some feature of the diffraction by oxides of this type attributable to stoichiometric excess of the metallic constituent. We have obtained patterns showing resolution of details of fine structure of the reflexions, from which a complete interpretation of the phenomenon is possible.
Similar content being viewed by others
References
Sturkey and Frevel, Phys. Rev., 68, 56, and 209 (1945).
Hillier and Baker, Phys. Rev., 68, 98 (1945).
Hillier and Baker, J. Appl. Phys., 17, 12 (1946).
Ehrhardt and Lark-Horovitz, Phys. Rev., 57, 603 (1940).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
COWLEY, J., REES, A. Refraction Effects in Electron Diffraction. Nature 158, 550–551 (1946). https://doi.org/10.1038/158550c0
Issue Date:
DOI: https://doi.org/10.1038/158550c0
- Springer Nature Limited
This article is cited by
-
Anomalous Refraction Effect in Electron Diffraction
Nature (1950)
-
Line-Breadth in Electron Diffraction
Nature (1950)