Measurement appts. for momentum spectrum of elastically scattered X=rays

摘要

The appts. comprises a polychromatic X-ray source (20), the radiation (23) from which is incident on a first horizontally arranged circular aperture (22) within a shutter (21). The scattered radiation arising from a particular horizontal plane (e.g. 33,37) in the sample (25) is then detected via a second horizontal slit aperture (29,30) by circular detectors (1-4), in the horizontal image plate (27), each circular detector corresp. to one object plane (33,37) in the sample. The sample (25) can be inclined at an angle and is moved slowly on a supporting (X-ray transparent) surface (26) so that the sample is scanned by the X-rays.