The Eulerian Cradle is a symmetric device with full rotation range of 360 degrees for both circles. The segment shaped phi-circle box within the chi-circle prevent drastically against shadowing. So, this model is optimally suited for texture analysis.
As standard, an oscillation device with flat specimen holder is included allowing for reflection and transmission geometry, as well. The amplitude is adjustable from 0 to 12 mm, the frequency is fixed by the synchronous motor drive. Both circle are equipped with stepper motors and 0-point controls. The standard sample size may be 20 x 15 x 5 mm.
Several collimator types may be inserted into the primary beam.
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Eulerian Cradle |
Segment shaped phi-circle |
Collimators |
The thin film attachment is used in the APD 2000 diffractometer when polycrystalline samples in the form of thin film or multi-layers have to be analysed with the grazing beam geometry. The X-ray beam pass through an horizontal Soller slit system and is made to fall on the rotational sample stage. The diffracted beam optics is modified to a parallel beam optics and a flat monochromator made of graphite is incorporated in the diffracted beam.
