Energy dispersive x-ray diffraction of micro-crystals at ultrahigh pressures
- 1 January 1996
- journal article
- advanced techniques-for-diffraction-experiment
- Published by Taylor & Francis in High Pressure Research
- Vol. 14 (4-6), 257-267
- https://doi.org/10.1080/08957959608201410
Abstract
Ultrahigh pressures and temperatures in diamond-anvil cells are achieved at the expense of reducing sample volume. The capability of x-ray diffraction with high spatial resolution is most fundamental for probing microscopic samples at the maximum P-T and for minimizing the effect of gradients. Polychromatic synchrotron radiation with energy dispersive x-ray diffraction is ideal for the development of new classes of structural microprobes. Primary x-ray beams down to 3 microns can be produced with microbeam slit systems and microfocusing optical devices. The microprobe can be routinely used for a variety of high-pressure experiments, including single-crystal x-ray diffraction above 50 GPa, polycrystal-line diffraction above 300 GPa, deviatoric strain measurements, and diffraction at simultaneous high pressure and temperature.Keywords
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