Figure 1
Illustration of the optical configuration of XRIM (distances and components not drawn to scale). All distances are in the X-ray beam frame of reference. The object–lens distance, do ≃ 50 mm, satisfies the lens equation and is determined by the focal length of the Fresnel zone plate with an outermost zone width of 60 nm (f = 48 mm). Inset: specular diffraction geometry indicating sample rotation angle (θ), lens/detector rotation angle () and scattering vector . |