Patent ID: 6831962
Filing Date: 2004-12-14
Classification: G01N

Abstract:
A method for relative adjusting of position coordinates (xp, yp, zp) of at least one sample which is on a sample holder or table of a goniometer (200), which is to be examined by means of the goniometer (200), which is movable in its position (xp, yp, zp) in at least one direction of translation (x, y, z) and which is rotatable about at least one tilting axle (&ohgr;, &khgr;, &phgr;) in its orientation or tilting with respect to the center coordinates (xm, ym, zm) of the goniometer (200) determined by an intersection point of the tilting axles (&ohgr;, &khgr;, &phgr;), comprising the steps of:dynamically compensating a trajectory, including a precession trajectory, of the sample which is taking place about the center coordinates (xm, ym, zm) during a variation of the sample orientation or tilting such that the sample is dynamically held at a measuring point; recording and exploiting the trajectory of the sample about the center coordinates (xm, ym, zm) by digital processing; calculating correction coordinates (xmâˆ’xp, ymâˆ’yp, zmâˆ’zp) from the exploited and recorded trajectory in order to dynamically compensate the trajectory; and moving the sample according to the calculated correction coordinates (xmâˆ’xp, ymâˆ’yp, zmâˆ’zp) into at least one of the directions of translation (x, y, z) so that this translational shifting is dynamically coupled to a movement of the tilting axles (&ohgr;, &khgr;, &phgr;) of the goniometer (200) determined by the variation of the sample orientation or tilting.