Figure 4
(a) An explanation of Kikuchi band geometry using Kossel cones. (b) The F-lattice representing e.g. the zincblende structure, with a sketch of one double cone. On the left-hand side, the qualitative intensity profile resulting from the dynamical theory (two-beam approximation) near the Bragg angle is depicted. On the right-hand side, the kinematic `step-profile' model is visualized, which assigns the kinematic reflector intensity to the entire band width and which is zero otherwise. |