A new high-flux chemical and materials crystallography station at the SRS daresbury. 1. Design, construction and test results

Robert J. Cernik*, William Clegg, C. Richard A. Catlow, Graham Bushnell-Wye, John V. Flaherty, G. Neville Greaves, Lan Burrows, David J. Taylor, Simon J. Teat, Mohammed Hamichi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

221 Citations (SciVal)

Abstract

A new single-crystal diffraction facility has been constructed on beamline 9 of the SRS at Daresbury Laboratory for the study of structural problems in chemistry and materials science. The station utilizes up to 3.8 mrad horizontally from the 5 T wiggler magnet which can be focused horizontally and vertically. The horizontal focusing is provided by a choice of gallium-cooled triangular bent Si (111) or Si (220) monochromators, giving a wavelength range from 0.3 to 1.5 A. Focusing in the vertical plane is achieved by a cylindrically bent zerodur mirror with a 300 μm-thick palladium coating. The station is equipped with a modified Enraf-Nonius CAD-4 four-circle diffractometer and a Siemens SMART CCD area-detector system. High- and low-temperature facilities are available to cover the temperature range from about 80 to 1000 K. Early results on test compounds without optimization of the beam optics demonstrate that excellent refined structures can be obtained from samples giving diffraction patterns too weak to be measured with conventional laboratory X-ray sources, fulfilling a major objective of the project.

Original languageEnglish
Pages (from-to)279-286
Number of pages8
JournalJournal of Synchrotron Radiation
Volume4
Issue number5
DOIs
Publication statusPublished - 01 Sept 1997

Keywords

  • Chemical crystallography
  • Instrumentation
  • Microcrystal diffraction
  • SRS station 9.8
  • Weakly scattering materials

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