UNICAT 34-ID-E X-ray Micro-Diffraction Facility

UNICAT 34-ID-E x-ray micro-diffraction facility produces x-ray beams that are routinely 0.5 µm x 0. 5 µm or better for use in diffraction or fluorescence techniques using Kirkpatrick-Baez (K-B) focusing mirrors. The specially designed micro-monochromator allows the selection of either p olychromatic or monochromatic conditions with a fixed focal spot on the sample.

Polychromatic x-ray microscopy utilizes Laue diffraction method to characterize crystalline structure in materials. With scanning technique and n ewly developed differential aperture techniques , spatially resolved microdiffraction measurements can be made in two or three dimensions with submicron resolution. Properties that can be measured include the local crystalline phase, local texture (orientation), and the local strains.

The development of the microbeam experimental capabilities were sponsored by the DOE Office of Basic Energy Sciences.

(Contact P. Zschack, zschack@anl.gov.)