Abstract
DR. G. I. FINCH and A. G. QUARRELL1 have reported many extra rings in electron diffraction patterns from thin metal foils containing preferentially oriented crystals. At first they attributed these to diffraction from two-dimensional gratings made up of the atoms in the crystallographic faces through which electrons might leave the foil. In a later comprehensive paper, Finch, Quarrell and Wilman2 have stated that the extra rings do not appear unless the metal foil is contaminated ; the earlier explanation has been abandoned. In this later paper are given, however, the results of the calculations concerning diffraction by atoms in exit faces. This note is concerned solely with the results of such calculations.
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NATURE, 135, 183 ; 1935.
Trans. Faraday Soc., 31, 1074 ; September 1935.
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GERMER, L. Extra Electron Diffraction Rings. Nature 136, 832 (1935). https://doi.org/10.1038/136832a0
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DOI: https://doi.org/10.1038/136832a0
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