Abstract
IN the electron diffraction patterns formed by single crystals of graphite (transmission) we have discovered new spots which would be indexed (½00) or (½½0) (and their symmetrical associates) in the usual unit cell. These new spots are very weak (perhaps a hundred times less intense than the strong (100) ; they appear in all the graphites (Ceylon, Madagascar, Canada) tested. They do not appear in similar structures such as molybdenite ; thus they are not due to electrons of twice the velocity indicated by the accelerating potential.
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References
Lipson and Stokes, Proc. Roy. Soc., A, 181, 101 (1942).
Hoerni, Nature [164, 1045 (1949)].
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HOERNI, J., WEIGLE, J. Structure of Graphite. Nature 164, 1088 (1949). https://doi.org/10.1038/1641088a0
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DOI: https://doi.org/10.1038/1641088a0
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