Study of crystalline structures using diffraction of X-rays. The Debye and Scherrer method uses diffraction of monochromatic rays from a powdered crystalline sample giving a range of angles of incidence with respect to crystallographic axes. The arrangement of atoms in space can be inferred from the distribution of intensity in the diffraction pattern. The unit cell determines the geometry of diffraction maxima while the distribution of atoms within the unit cell controls the intensity of each reflection. The Line method examines polychromatic diffraction from a single crystal. See Bragg equation

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