Tungsten X-ray Detector

Tungsten X-ray detector is high-purity Ge-detector with 23 crystals arranged in a semi-annular array made by tungsten material. The 23 detector crystals are equally spaced in steps of 8.2°, covering azimuthal angles from 0° to 180°. The detectors are in orthogonal pairs, allowing simultaneous measurement of 11 sets of orthogonal q-vector components. Tungsten is hiding in detector to control the direction of energy dispersive. This design is intended to improve the determination of strain tensor components and permits the measurement of crystallographic texture with a single detector set-up. The multi-element arrangement is also an advantage when the average grain size in the sample is comparable with the beam dimension. In this case, reflections can vanish for certain azimuthal angles. Element 23 at 180° is symmetrical to element 1 at 0° and is used for detector alignment.

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