Figure from the DOE Report June, 2017

June 2017 DOE Report

Highest-Pressure Solid Aluminum X-Ray Diffraction Recorded on OMEGA EP

At standard conditions, aluminum is an "sp"-bonded metal with no "d" electrons. Because of this relative simplicity, Al is ideal for testing theoretical calculations. Al is also often used as an equation-of-state material standard for compression experiments. Density-functional-theory calculations predict that ambient face-centered-cubic (fcc) Al crystals transform to hexagonal-close-packed (hcp), then body-centered-cubic (bcc) structures as pressure is increased and temperatures remain below 3000 K.

OMEGA EP image-plate (IP) data is shown here.

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