International Tables for Crystallography

Access to online content requires a licence


Beam drift, control and polarization
Sofia Diaz-Moreno and Roberto Boada. International Tables for Crystallography (2023). Vol. I [ doi:10.1107/S1574870722003172 ]

Abstract

The main factors that cause the X-ray beam to drift are discussed in this chapter. Issues such as movement of the source or mechanical and thermal instabilities of the main optical elements of the beamline are translated into movement of the X-ray beam at the sample, intensity drifts and nonlinearities on the energy scale, affecting the quality of the data collected. The main steps that need to be taken to prevent and/or minimize the effects of these drifts are described, and approaches such as feedback systems are presented. The polarization of the beam delivered by the different types of X-ray sources used for synchrotron-based spectroscopy experiments is also presented. The on-axis and off-axis polarizations of the bending magnet and insertion devices such as wigglers and undulators are discussed.


Access, prices and ordering

International Tables for Crystallography is available online as a full set of volumes through Wiley.

set

If you have already registered and are using a computer listed in your registration details, please email support@iucr.org for assistance.

About International Tables for Crystallography

International Tables for Crystallography is the definitive resource and reference work for crystallography. The multi-volume series comprises articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the structure and properties of materials.