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
and
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) :
