Figure 5
For a given scattering angle θ, the phase map ϕθ(x, y, z) is the phase of the secondary wave that would reach the detector in the event that the sample had a scattering centre (electron or nucleus) at a point (x, y, z). The phase map takes constant values on planes at an angle θ/2 compared with the incoming beam, and the distance between planes with identical phases (modulo 2π) is = λ/[2sin(θ/2)]. |