ABSTRACT
For diffraction from polycrystalline materials, in which each grain scatters independently and is not too thick (above a few micrometers), intensities and shapes of diffraction lines are given adequately by the kinematic theory, discussed in Chapter 10. An important result of this theory is that the angular width of a diffraction line is inversely proportional to the number,
N
, of unit cells along the diffraction vector (the normal to the diffracting planes). Thus, the broadening is inversely proportional to the grain size.
