view article
Figure 1
A scale schematic of the setup viewed perpendicular to the primary beam and parallel to the axis of the Displex, with a sample-to-detector distance of 60 mm and 2θ = 25°. The sample is marked by the central red dot and the primary beam in green. (a) The original setup: each intersection of the beam with the beryllium of the vacuum chamber and radiation shield produces an intense powder pattern seen on the detector. (b) The new setup: the powder pattern from entering the vacuum chamber is removed by the internal collimator and there is no exit pattern because of the ball bearing beamstop. The powder pattern from the flexible graphite is very uniform and more than an order of magnitude less intense than that from the beryllium.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 52| Part 2| April 2019| Pages 445-450
https://doi.org/10.1107/S1600576719003078
Follow J. Appl. Cryst.
Sign up for e-alerts
E-alerts
Follow J. Appl. Cryst. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS