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In Situ Gas Supply System on the Powder Diffraction Beamline I11 at Diamond Light Source

DOI: 10.4028/ DOI Help

Authors: J.e. Parker (Diamond Light Source) , J. Potter (Diamond Light Source) , S.p. Thompson (Diamond Light Source) , A.r. Lennie (Diamond Light Source) , C.c. Tang (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Materials Science Forum , VOL 706-709 , PAGES 1707 - 1712

State: Published (Approved)
Published: January 2012

Abstract: Beamline I11 at Diamond began accepting users for high resolution powder diffraction experiments in Oct 2008. We present the design, key specifications, performance and the hardware of this new beamline which receives an intense and highly collimated x-ray beam generated by an in-vacuum undulator. With the simple optics (a double-crystal monochromator, harmonic rejection mirrors and slits), a high purity beam of low energy-bandpass X-rays optimised at 15 keV is delivered at the sample. The heavy duty diffraction instrument is designed to have the flexibility to house a variety of sample environments and holds two detection systems to collect high quality diffraction data, i.e. multi-analysing crystals (MAC) for high angular resolution experiments and a fast position sensitive detector (PSD) for time-resolved studies. A recent addition to the beamline capabilities is the installation of a specifically designed gas control system. This allows the in-situ dosing of a powder sample with gases such as hydrogen and carbon dioxide, at low (~10 mbar) and high pressures (<100 bar). In addition a low pressure capillary sample cell is described which is now available to users of the beamline.

Subject Areas: Technique Development

Instruments: I11-High Resolution Powder Diffraction