| 主权项 |
1. A method of imaging an inhomogeneous polycrystalline sample having a plurality of crystallites of at least a first crystalline component, comprising:
illuminating an illuminated area extending across a surface of a sample with substantially monochromatic X-rays from an incident beam focus, the substantially monochromatic X-rays being incident at a first angle θ1 to the surface of the sample; and passing X-rays diffracted by the sample at a second angle θ2 through a pinhole arrangement, wherein the diffraction angle θ1+θ2 fulfils a Bragg condition for the first crystalline component, and the pinhole arrangement is located at a position determined by a parafocus condition, the X-rays passing through the pinhole arrangement and onto a detector spaced from the pinhole arrangement, wherein the pinhole arrangement provides a two-dimensional image of the first crystalline component at a surface of the sample on the detector. |
