X-ray diffraction by finite and imperfect crystal lattices

Abstract

The Fourier transform of a crystal is a representation which, if fully known, would be equivalent to, and give the same information as, the usual description of a crystal. At the same time the Fourier transform is very closely related to the diffraction properties and it offers the best survey of the diffraction data obtained, and of those missing, for a discussion of crystal shape and of crystal imperfection. The desirability of an exact quantitative x-ray study of the perfection of an individual metal single crystal before and during plastic deformation is urged.