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MiniFlex: suppression of umbrella effect due to differences in Soller slits

AppNote B-XRD1052: suppression of umbrella effect from differences in Soller slits

Background

With the MiniFlex, it is possible to select Soller slits with small widths in order to obtain high resolution. In particular, the 0.5° receiving Soller slit and the 5 mm or 2 mm incident high limiting (DHL) slits can suppress the axial divergence, or umbrella effect which is prominent on the low-angle side. This report shows a comparison of the X-ray diffraction profiles of zeolite-A when the receiving Soller slit and DHL are changed (the incident Soller slit is 2.5°).