Patent ID: 6411676
Filing Date: 2002-06-25
Classification: G01N

Abstract:
A method of determining parameters of a unit cell of a crystal structure using diffraction, comprising the following steps:a. directing X- or neutron rays at a crystal rotating over a predetermined angle; b. detection of the radiation reflected by the crystal on a two-dimensional detection surface; c. determining the position where the reflected radiation falls on the detection surface, characterized in that the steps a, b and c are repeated, wherein in step a the crystal rotates always over the same angle, that in the first performance of the steps a, b and c the relative movement of the crystal in relation to the detection surface is determined by only the rotation of the crystal, that in a repeat-performance of the steps a, b and c the relative movement of the crystal in relation to the detection surface is determined by a rotation of the crystal identical to that of the first performance of the steps a, b and c, and by a further relative movement of the crystal in relation to the detection surface coupled thereto, and that the combination of the positions determined in the repeat performance of steps c determines the angle position of the crystal in relation to a reference value in which reflection of the beams occurs.