Patent ID: 9110003
Filing Date: 2015-08-18
Classification: G01N

Abstract:
1. A method of X-ray diffraction for measuring a sample having a sample surface, the method comprising: illuminating a beam of X-rays along an illuminated strip extending along the surface of the sample in a y direction; passing X-rays diffracted by the sample along the illuminated strip through a mask between the sample and a two-dimensional detector, wherein the mask has a slit extending substantially perpendicularly to the y direction and the mask is placed at a distance from the illuminated strip of between 20% and 80% of the distance between the illuminated strip and the X-ray detector so that X-rays diffracted from different positions along the illuminated strip are received at different positions along the y direction on the two-dimensional X-ray detector; detecting X-rays diffracted by the sample at the two-dimensional X-ray detector, so that different positions along the y direction at the two-dimensional detector correspond to different positions along the illuminated strip and different positions in the perpendicular direction, z′, to the line direction on the two-dimensional X-ray detector correspond to different diffraction angles 2θ.