The X-Ray Diffraction Laboratory houses a Rigaku Ultima III X-ray diffraction system. The system is configured with a vertical Theta:Theta wide angle goniometer, high intensity Cu x-ray tube, and a scintillation counter detector. Optics provide for both Bragg-Brentano parafocusing and parallel-diffracted beams. Automatic variable divergence and antiscatter slits as well as fixed beam monochromator are available. Automation and data collection is accomplished through a Dell computer running Windows XP and the latest version of MDI Jade+ 7.n software and RIQAS 4.0 Rietveld Refinement Software. The computer also has release 1998 powder diffraction database files from the International Centre for Diffraction Data for post collection data analysis. The laboratory also has a collection of printed data files as well.
The lab is routinely used by several departments within SMU including Anthropology, Chemistry, Engineering, as well as Geology, and on occasion is used by staff and students from nearby Universities. Assistance with lab operation and maintenance is provided by staff member Roy Beavers.
The XRD laboratory is operated as a cost center within the Department. At present, non-profit users are charged $15/hr for daytime (supervised) use. SMU graduate students are exempt from these fees if they have no external sources of research support. Commercial (for-profit) users are charged $ _ /hr. Rates are adjusted occasionally to reflect increasing costs.
Those interested in services provided by the XRD Laboratory should contact: