1.2.2- Measurement conditions

For a routine pattern with a 0.15° receiving slit, the following recording conditions may lead to a successful identification :

a- From 5 to 77° (2-theta), with a counting step of 0.08° (2-theta), a total of 900 points measured in 30 minutes if counting 2 seconds per point.

b- From 5 to 41° (2-theta) could be sufficient with 4 seconds per point, all other conditions similar.

Example :
sample pressed on a glass slide

inserted in the vertical loading holder :

Strong preferred orientation effect is observed.

Other effect is on the resolution (not parallel beam on non-plane surface) :