THE GENERAL-PURPOSE 2-CIRCLE DIFFRACTOMETER ON STATION 9.1, DARESBURY LABORATORY

Station 9.1 at Daresbury Laboratory houses a general purpose two-circle diffractometer which can be variously configured for high or low angular resolution. Being only 16 m from the tangent point of the 5-T wiggler magnet, it receives a high flux and is therefore ideally situated for experiments on both crystalline powders and liquid and amorphous systems. Both capillary and flat-plate geometry are available, and experiments can also be performed using grazing incidence from surfaces. A choice of monochromators can maximize the flux or provide stable wavelength control for measurements exploiting anomalous dispersion. High- and low-temperature sample environments are available in addition to controlled atmospheres for in situ investigation of chemical reactions.