W0036

Microcrystal Diffraction at the ESRF. Å.Kvick, European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex France

Microcrystal diffraction using synchrotron radiation has progressed rapidly during the last few years mainly due to the development of very stable and high-flux X-ray sources at the third generation synchrotron facilities in combination with deveolopments of new area detector systems such as CCD detectors or imaging plate equipment suitable to single crystal applications. Crystals in the micrometer size range are now frequently analysed successfully at the major facilities. This presentation will mainly concentrate on the microcrystal diffraction facilities at the ID11 Materials Science beam-line at the ESRF, where two insertion device provide the X rays. The users may choose from a 24-pole wiggler or a 94-pole minigap undulator to obtain a suitable X-ray wavelength anywhere in the region 0.1-2 Å. Several detector systems are used at the beam-line including the Bruker SMART CCD system, imaging intensifier CCD systems and Molecular Dynamics image plate scanners.The talk will present several examples from micronsize single crystal investigations including those from zeolites, aluminophosphates, cellodextrins, drugs, and optoelectronic materials. New developments in the field of microcrystal diffraction will also be presented.