In-Situ Synchrotron X-Ray Diffraction
Synchrotrons produce incredibly powerful x-rays that we can use to probe our samples while they are at high pressure and high temperature. We do most of our work at the National Synchrotron Light Source (NSLS) at Brookhaven National Lab (BNL) using the D-DIA apparatus located at X17B2. We use white x-rays (as opposed to monochromatic) to produce diffraction as well as make radiographic images of our samples.
From the left: Dawn Pape, Chris Cline, Don Weidner, and Sylvia-Monique Thomas. |
Pamela making final adjustments to the D-DIA anvils. |
X17B2
The equipment at the X17 MAC (X17B2) beamline allows us to record energy dispersive diffraction patterns from 10 detectors.
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Each detector records a full powder pattern of the sample. This allows us to gather a tremendous amount of data about what various crystal populations are doing within the sample.
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Radiographs captured during the experiment allow us to calculate the strain.
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An example of the kinds of experiments we are doing using the D-DIA can be found on the quartz page.
White Beam - Laue
We also do work at the Advanced Photon Source at Argonne National Laboratory using HP-CAT's bending magnet beamline (16BMB). More information about these experiments can be found on the High Pressure Experimentation page.