x-ray diffraction


x-ray diffraction
diffraction of x-rays by the regularly spaced atoms of a crystal, useful for determining the arrangement of the atoms.
[1940-45]

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Phenomenon in which the atoms of a crystal, by virtue of their uniform spacing, cause an interference pattern of the waves in an incident beam of X rays.

The crystal's atomic planes act on the X rays in the same way a uniformly ruled grating acts on a beam of light (see polarization). The interference pattern is specific to each substance and gives information on the structure of the atoms or molecules in the crystal. See also William Henry Bragg.

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      a phenomenon in which the atoms of a crystal, by virtue of their uniform spacing, cause an interference pattern of the waves present in an incident beam of X rays. The atomic planes of the crystal act on the X rays in exactly the same manner as does a uniformly ruled grating on a beam of light. See also Bragg law; Laue diffraction pattern.

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Universalium. 2010.

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