New operational modes have been added to the Stony Brook scanning transmission x-ray microscope at the NSLS by the incorporation of a CCD detector. A zone plate focuses x rays to a microprobe, through which a specimen can be scanned. The x rays transmitted by the specimen are detected in the far field, at high angular resolution, by the CCD. The microdiffraction patterns so obtained may be used in several ways to obtain information about the sample: by obtaining structural information about the specimen from the patterns on a point-by-point basis, by building up scanned images from signals derived from the CCD frames, or by deconvolving the four-dimensional dataset. These modes increase the resolution that can be achieved in the microscope, offer new imaging methods, and ways of obtaining phase and amplitude maps of a specimen.
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