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J Synchrotron Radiat. 2012 May;19(Pt 3):408-16. doi: 10.1107/S0909049512009272. Epub 2012 Mar 29.

Implementation of a beam deflection system for studies of liquid interfaces on beamline I07 at Diamond.

Author information

1
Diamond Light Source, Harwell Science and Innovation Campus, Chilton, Didcot OX11 0DE, UK. tom.arnold@diamond.ac.uk

Abstract

X-ray optics, based on a double-crystal deflection scheme, that enable reflectivity measurements from liquid surfaces/interfaces have been designed, built and commissioned on beamline I07 at Diamond Light Source. This system is able to deflect the beam onto a fixed sample position located at the centre of a five-circle diffractometer. Thus the incident angle can be easily varied without moving the sample, and the reflected beam is tracked either by a moving Pilatus 100K detector mounted on the diffractometer arm or by a stationary Pilatus 2M detector positioned appropriately for small-angle scattering. Thus the system can easily combine measurements of the reflectivity from liquid interfaces (Q(z) > 1 Å(-1)) with off-specular data collection, both in the form of grazing-incidence small-angle X-ray scattering (GISAXS) or wider-angle grazing-incidence X-ray diffraction (GIXD). The device allows operation over the energy range 10-28 keV.

PMID:
22514177
DOI:
10.1107/S0909049512009272
[Indexed for MEDLINE]

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